<?xml version="1.0" encoding="US-ASCII" ?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 5.5a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: http://www.novaworks.co -->
    <!-- Field: Doc-Info; Name: Source; Value: PURE%2D20200731 POS AM DFN.xfr; Date: 2020%2D10%2D20T00:45:28Z -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x80070000 -->
<xbrli:xbrl xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:us-gaap="http://fasb.org/us-gaap/2020-01-31" xmlns:us-roles="http://fasb.org/us-roles/2020-01-31" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:us-types="http://fasb.org/us-types/2020-01-31" xmlns:country="http://xbrl.sec.gov/country/2020-01-31" xmlns:srt="http://fasb.org/srt/2020-01-31" xmlns:PURE="http://purebio.com/20200731">
    <link:schemaRef xlink:href="pure-20200731.xsd" xlink:type="simple" />
    <xbrli:context id="AsOf2019-07-31">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2016-02-01to2016-02-29_custom_TwoThousandAndSevenEquityIncentivePlanMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PlanNameAxis">PURE:TwoThousandAndSevenEquityIncentivePlanMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2016-02-01</xbrli:startDate>
        <xbrli:endDate>2016-02-29</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-07-31">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_custom_TwoThousandFourteenWarrantsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2017-08-01to2017-10-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:TypeOfArrangementAxis">PURE:TwoYearServiceAgreementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:BusinessDevelopmentServicesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2017-08-01</xbrli:startDate>
        <xbrli:endDate>2017-10-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-15to2018-08-16_us-gaap_SubsequentEventMember_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-15</xbrli:startDate>
        <xbrli:endDate>2018-08-16</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-08-16_us-gaap_SubsequentEventMember_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-08-16</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2017-08-01to2018-07-31_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2017-08-01</xbrli:startDate>
        <xbrli:endDate>2018-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CommonStockMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-07-31_us-gaap_CommonStockMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_CommonStockMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-07-31_us-gaap_AdditionalPaidInCapitalMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_AdditionalPaidInCapitalMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-07-31_us-gaap_RetainedEarningsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_RetainedEarningsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:TypeOfArrangementAxis">PURE:TwoYearServiceAgreementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:BusinessDevelopmentServicesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_MrTomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrTomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-02-19</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_DaleOkunoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:DaleOkunoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-02-19</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-02-18to2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_MrTomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrTomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-02-18</xbrli:startDate>
        <xbrli:endDate>2019-02-19</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-02-18to2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_DaleOkunoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:DaleOkunoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-02-18</xbrli:startDate>
        <xbrli:endDate>2019-02-19</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_FurnitureAndFixturesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PropertyPlantAndEquipmentByTypeAxis">us-gaap:FurnitureAndFixturesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-07-31_custom_MrTomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrTomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-06-27to2018-06-28_custom_TomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionsByRelatedPartyAxis">PURE:TomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-06-27</xbrli:startDate>
        <xbrli:endDate>2018-06-28</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-15to2018-08-16">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-15</xbrli:startDate>
        <xbrli:endDate>2018-08-16</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-08-16">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-08-16</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-10-01to2019-10-02_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-10-01</xbrli:startDate>
        <xbrli:endDate>2019-10-02</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-10-02_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-10-02</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-10-02_us-gaap_PrivatePlacementMember_custom_TomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:TomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-10-02</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-10-02_us-gaap_PrivatePlacementMember_custom_DaleOkunoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:DaleOkunoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-10-02</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CommonStockMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_us-gaap_CommonStockMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_us-gaap_AdditionalPaidInCapitalMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:AdditionalPaidInCapitalMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_us-gaap_RetainedEarningsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">us-gaap:RetainedEarningsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:IndividualCustomerOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:IndividualCustomerTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:IndividualCustomerOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:IndividualCustomerTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_CustomerOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:AccountsReceivableMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:CustomerOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_CustomerTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:AccountsReceivableMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:CustomerTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_CustomerThreeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:AccountsReceivableMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:CustomerThreeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_OneCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:AccountsReceivableMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:OneCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_TwoCustomersMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:AccountsReceivableMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:TwoCustomersMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_custom_AccountsPayablesMember_custom_VendorOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">PURE:AccountsPayablesMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:VendorOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_custom_AccountsPayablesMember_custom_VendorTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">PURE:AccountsPayablesMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:VendorTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2020-03-08to2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:AccreditedInvestorsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2020-03-08</xbrli:startDate>
        <xbrli:endDate>2020-03-09</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:AccreditedInvestorsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-03-09</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2020-03-08to2020-03-09_custom_MrTomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrTomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2020-03-08</xbrli:startDate>
        <xbrli:endDate>2020-03-09</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2020-03-08to2020-03-09_custom_DaleOkunoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:DaleOkunoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2020-03-08</xbrli:startDate>
        <xbrli:endDate>2020-03-09</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2020-03-08to2020-03-09_custom_IvenChenMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:IvenChenMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2020-03-08</xbrli:startDate>
        <xbrli:endDate>2020-03-09</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2020-03-08to2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember_custom_NetProceedsAfterDeductionsOfExpensesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:AccreditedInvestorsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:NetProceedsAfterDeductionsOfExpensesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2020-03-08</xbrli:startDate>
        <xbrli:endDate>2020-03-09</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember_srt_MinimumMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:ThreeHoldersMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:RangeAxis">srt:MinimumMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-02-19</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember_srt_MaximumMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:ThreeHoldersMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:RangeAxis">srt:MaximumMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-02-19</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:ThreeHoldersMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-02-19</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-02-18to2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:StatementEquityComponentsAxis">PURE:TwoThousandFourteenWarrantsMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:ThreeHoldersMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-02-18</xbrli:startDate>
        <xbrli:endDate>2019-02-19</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:TypeOfArrangementAxis">PURE:TwoYearServiceAgreementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:BusinessDevelopmentServicesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_ConsultantsAndOthersMember_srt_MinimumMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionAxis">PURE:ConsultantsAndOthersMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:RangeAxis">srt:MinimumMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_ConsultantsAndOthersMember_srt_MaximumMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionAxis">PURE:ConsultantsAndOthersMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:RangeAxis">srt:MaximumMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_SharesVestedDuringPeriodMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:VestingAxis">PURE:SharesVestedDuringPeriodMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_HenryRLambertMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:HenryRLambertMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_PfanzelterMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionAxis">PURE:PfanzelterMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_TwoThousandAndSevenEquityIncentivePlanMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PlanNameAxis">PURE:TwoThousandAndSevenEquityIncentivePlanMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_TwoThousandSeventeenEquityIncentivePlanMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PlanNameAxis">PURE:TwoThousandSeventeenEquityIncentivePlanMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_TwoThousandSeventeenEquityIncentivePlanMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PlanNameAxis">PURE:TwoThousandSeventeenEquityIncentivePlanMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_EmployeesOfficersAndDirectorsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:EmployeesOfficersAndDirectorsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_custom_AccountsPayablesMember_custom_VendorOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">PURE:AccountsPayablesMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:VendorOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_custom_PurchasesMember_custom_VendorOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">PURE:PurchasesMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:VendorOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_custom_PurchasesMember_custom_VendorOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">PURE:PurchasesMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:VendorOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_FederalMember_custom_PreviouslyUtilizedMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:IncomeTaxAuthorityAxis">PURE:FederalMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:PreviouslyUtilizedMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_FederalMember_custom_PreviouslyUtilizedMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:IncomeTaxAuthorityAxis">PURE:FederalMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:PreviouslyUtilizedMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_FederalMember_custom_CarriedForwardIndefinitelyMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:IncomeTaxAuthorityAxis">PURE:FederalMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:CarriedForwardIndefinitelyMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_StateMember_custom_CarriedForwardIndefinitelyMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:IncomeTaxAuthorityAxis">PURE:StateMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_SalesRevenueNetMember_custom_OneIndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:OneIndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_SalesRevenueNetMember_custom_OneIndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:OneIndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_SalesRevenueNetMember_custom_TwoIndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:TwoIndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_SalesRevenueNetMember_custom_TwoIndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:TwoIndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_SalesRevenueNetMember_custom_ThreeIndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:ThreeIndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-06-28_custom_TomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionsByRelatedPartyAxis">PURE:TomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-06-28</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-07-28to2019-07-29_custom_SubleaseAgreementMember_custom_SwabPlusLPMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:TypeOfArrangementAxis">PURE:SubleaseAgreementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="dei:LegalEntityAxis">PURE:SwabPlusLPMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-07-28</xbrli:startDate>
        <xbrli:endDate>2019-07-29</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_HarmonyBioscienceIncMember_custom_MrTomYLeeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="dei:LegalEntityAxis">PURE:HarmonyBioscienceIncMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrTomYLeeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerThreeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:IndividualCustomerThreeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:IndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_country_US">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">country:US</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_ForeignMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">PURE:ForeignMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_ComputersAndEquipmentMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PropertyPlantAndEquipmentByTypeAxis">PURE:ComputersAndEquipmentMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_custom_ComputersAndEquipmentMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PropertyPlantAndEquipmentByTypeAxis">PURE:ComputersAndEquipmentMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_us-gaap_FurnitureAndFixturesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:PropertyPlantAndEquipmentByTypeAxis">us-gaap:FurnitureAndFixturesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_SubleaseAgreementMember_custom_SwabPlusLPMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:TypeOfArrangementAxis">PURE:SubleaseAgreementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="dei:LegalEntityAxis">PURE:SwabPlusLPMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_BoardOfDirectorsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:BoardOfDirectorsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_WarrantOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:WarrantOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_WarrantTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:WarrantTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_WarrantThreeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:WarrantThreeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_WarrantFourMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:WarrantFourMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_ConsultantsAndOthersMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionAxis">PURE:ConsultantsAndOthersMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-10-03to2018-10-04_us-gaap_RestrictedStockUnitsRSUMember_custom_MrMyersMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrMyersMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-10-03</xbrli:startDate>
        <xbrli:endDate>2018-10-04</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2020-05-01to2020-05-31_us-gaap_RestrictedStockUnitsRSUMember_custom_MrMyersMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MrMyersMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2020-05-01</xbrli:startDate>
        <xbrli:endDate>2020-05-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-10-04_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-10-04</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-10-03to2018-10-04_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-10-03</xbrli:startDate>
        <xbrli:endDate>2018-10-04</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_custom_PfanzelterMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:RelatedPartyTransactionAxis">PURE:PfanzelterMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_NoOtherIndividualCustomerMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByTypeAxis">us-gaap:CustomerConcentrationRiskMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:ConcentrationRiskByBenchmarkAxis">us-gaap:SalesRevenueNetMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:MajorCustomersAxis">PURE:NoOtherIndividualCustomerMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2018-08-01to2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">PURE:MayJuneJulyTwoThousandNineteenMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2018-08-01</xbrli:startDate>
        <xbrli:endDate>2019-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">PURE:MayJuneJulyTwoThousandNineteenMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember_custom_MessrsDaleOkunoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">PURE:MayJuneJulyTwoThousandNineteenMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:MessrsDaleOkunoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember_custom_IvenChenMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:SubsidiarySaleOfStockAxis">us-gaap:PrivatePlacementMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">PURE:MayJuneJulyTwoThousandNineteenMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:TitleOfIndividualAxis">PURE:IvenChenMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_us-gaap_OtherLiabilitiesMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:BalanceSheetLocationAxis">us-gaap:OtherLiabilitiesMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2018-07-31_us-gaap_RestrictedStockUnitsRSUMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2018-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_VestedAndIssuableMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:AwardTypeAxis">us-gaap:RestrictedStockUnitsRSUMember</xbrldi:explicitMember>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:VestedAndIssuableMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_BoardFeesDuetoOfficersAndDirectorsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:BoardFeesDuetoOfficersAndDirectorsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2019-07-31_custom_BoardFeesDuetoOfficersAndDirectorsMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="srt:StatementScenarioAxis">PURE:BoardFeesDuetoOfficersAndDirectorsMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2019-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_ExercisePriceOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:ExercisePriceOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_ExercisePriceTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:ExercisePriceTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="From2019-08-01to2020-07-31_custom_ExercisePriceThreeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:ExercisePriceThreeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:startDate>2019-08-01</xbrli:startDate>
        <xbrli:endDate>2020-07-31</xbrli:endDate>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_ExercisePriceOneMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:ExercisePriceOneMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_ExercisePriceTwoMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:ExercisePriceTwoMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:context id="AsOf2020-07-31_custom_ExercisePriceThreeMember">
      <xbrli:entity>
        <xbrli:identifier scheme="http://www.sec.gov/CIK">0001006028</xbrli:identifier>
        <xbrli:segment>
          <xbrldi:explicitMember dimension="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis">PURE:ExercisePriceThreeMember</xbrldi:explicitMember>
        </xbrli:segment>
      </xbrli:entity>
      <xbrli:period>
        <xbrli:instant>2020-07-31</xbrli:instant>
      </xbrli:period>
    </xbrli:context>
    <xbrli:unit id="USD">
      <xbrli:measure>iso4217:USD</xbrli:measure>
    </xbrli:unit>
    <xbrli:unit id="Shares">
      <xbrli:measure>xbrli:shares</xbrli:measure>
    </xbrli:unit>
    <xbrli:unit id="USDPShares">
      <xbrli:divide>
        <xbrli:unitNumerator>
          <xbrli:measure>iso4217:USD</xbrli:measure>
        </xbrli:unitNumerator>
        <xbrli:unitDenominator>
          <xbrli:measure>xbrli:shares</xbrli:measure>
        </xbrli:unitDenominator>
      </xbrli:divide>
    </xbrli:unit>
    <xbrli:unit id="Percent">
      <xbrli:measure>xbrli:pure</xbrli:measure>
    </xbrli:unit>
    <us-gaap:PreferredStockParOrStatedValuePerShare contextRef="AsOf2019-07-31" unitRef="USDPShares" decimals="INF">0.01</us-gaap:PreferredStockParOrStatedValuePerShare>
    <us-gaap:PreferredStockParOrStatedValuePerShare contextRef="AsOf2020-07-31" unitRef="USDPShares" decimals="INF">0.01</us-gaap:PreferredStockParOrStatedValuePerShare>
    <us-gaap:PreferredStockParOrStatedValuePerShare contextRef="AsOf2020-07-31_custom_BoardOfDirectorsMember" unitRef="USDPShares" decimals="INF">0.01</us-gaap:PreferredStockParOrStatedValuePerShare>
    <us-gaap:PreferredStockSharesAuthorized contextRef="AsOf2019-07-31" unitRef="Shares" decimals="INF">5000000</us-gaap:PreferredStockSharesAuthorized>
    <us-gaap:PreferredStockSharesAuthorized contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">5000000</us-gaap:PreferredStockSharesAuthorized>
    <us-gaap:PreferredStockSharesAuthorized contextRef="AsOf2020-07-31_custom_BoardOfDirectorsMember" unitRef="Shares" decimals="INF">5000000</us-gaap:PreferredStockSharesAuthorized>
    <us-gaap:PreferredStockSharesIssued contextRef="AsOf2019-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:PreferredStockSharesIssued contextRef="AsOf2020-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:CommonStockParOrStatedValuePerShare contextRef="AsOf2019-07-31" unitRef="USDPShares" decimals="INF">0.01</us-gaap:CommonStockParOrStatedValuePerShare>
    <us-gaap:CommonStockParOrStatedValuePerShare contextRef="AsOf2020-07-31" unitRef="USDPShares" decimals="INF">0.01</us-gaap:CommonStockParOrStatedValuePerShare>
    <us-gaap:CommonStockSharesAuthorized contextRef="AsOf2019-07-31" unitRef="Shares" decimals="INF">100000000</us-gaap:CommonStockSharesAuthorized>
    <us-gaap:CommonStockSharesAuthorized contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">100000000</us-gaap:CommonStockSharesAuthorized>
    <us-gaap:CommonStockSharesIssued contextRef="AsOf2019-07-31" unitRef="Shares" decimals="INF">76732334</us-gaap:CommonStockSharesIssued>
    <us-gaap:CommonStockSharesIssued contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">87072951</us-gaap:CommonStockSharesIssued>
    <us-gaap:CommonStockSharesOutstanding contextRef="AsOf2019-07-31" unitRef="Shares" decimals="INF">76732334</us-gaap:CommonStockSharesOutstanding>
    <us-gaap:CommonStockSharesOutstanding contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">87072951</us-gaap:CommonStockSharesOutstanding>
    <dei:EntityRegistrantName contextRef="From2019-08-01to2020-07-31">PURE BIOSCIENCE, INC.</dei:EntityRegistrantName>
    <dei:DocumentType contextRef="From2019-08-01to2020-07-31">POS AM</dei:DocumentType>
    <dei:AmendmentFlag contextRef="From2019-08-01to2020-07-31">true</dei:AmendmentFlag>
    <dei:EntityFilerCategory contextRef="From2019-08-01to2020-07-31">Non-accelerated Filer</dei:EntityFilerCategory>
    <dei:EntityCentralIndexKey contextRef="From2019-08-01to2020-07-31">0001006028</dei:EntityCentralIndexKey>
    <PURE:AmortizationOfStockIssuedForServices contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">4000</PURE:AmortizationOfStockIssuedForServices>
    <PURE:AmortizationOfStockIssuedForServices contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">38000</PURE:AmortizationOfStockIssuedForServices>
    <us-gaap:SellingGeneralAndAdministrativeExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">3695000</us-gaap:SellingGeneralAndAdministrativeExpense>
    <us-gaap:SellingGeneralAndAdministrativeExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">6416000</us-gaap:SellingGeneralAndAdministrativeExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">322000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ResearchAndDevelopmentExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">354000</us-gaap:ResearchAndDevelopmentExpense>
    <us-gaap:ShareBasedCompensation contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">787000</us-gaap:ShareBasedCompensation>
    <us-gaap:ShareBasedCompensation contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">2449000</us-gaap:ShareBasedCompensation>
    <us-gaap:OperatingExpenses contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">4017000</us-gaap:OperatingExpenses>
    <us-gaap:OperatingExpenses contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">6770000</us-gaap:OperatingExpenses>
    <us-gaap:OperatingIncomeLoss contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">4000</us-gaap:OperatingIncomeLoss>
    <us-gaap:OperatingIncomeLoss contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-5589000</us-gaap:OperatingIncomeLoss>
    <us-gaap:OtherNonoperatingIncomeExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">5000</us-gaap:OtherNonoperatingIncomeExpense>
    <us-gaap:OtherNonoperatingIncomeExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1000</us-gaap:OtherNonoperatingIncomeExpense>
    <us-gaap:NonoperatingIncomeExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:NonoperatingIncomeExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-965000</us-gaap:NonoperatingIncomeExpense>
    <us-gaap:NetIncomeLoss contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">4000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:NetIncomeLoss contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:NetIncomeLoss contextRef="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" decimals="0">-6554000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:NetIncomeLoss contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:NetIncomeLoss contextRef="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" decimals="0">4000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-6554000</us-gaap:NetIncomeLoss>
    <us-gaap:PreferredStockSharesOutstanding contextRef="AsOf2019-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:PreferredStockSharesOutstanding contextRef="AsOf2020-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:DepreciationAndAmortization contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">192000</us-gaap:DepreciationAndAmortization>
    <us-gaap:DepreciationAndAmortization contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">241000</us-gaap:DepreciationAndAmortization>
    <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">716000</us-gaap:IncreaseDecreaseInAccountsReceivable>
    <us-gaap:IncreaseDecreaseInAccountsReceivable contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">98000</us-gaap:IncreaseDecreaseInAccountsReceivable>
    <us-gaap:IncreaseDecreaseInInventories contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">370000</us-gaap:IncreaseDecreaseInInventories>
    <us-gaap:IncreaseDecreaseInInventories contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-20000</us-gaap:IncreaseDecreaseInInventories>
    <us-gaap:IncreaseDecreaseInPrepaidExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">2000</us-gaap:IncreaseDecreaseInPrepaidExpense>
    <us-gaap:IncreaseDecreaseInPrepaidExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-2000</us-gaap:IncreaseDecreaseInPrepaidExpense>
    <us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">774000</us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities>
    <us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-40000</us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities>
    <us-gaap:IncreaseDecreaseInDeferredLiabilities contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">-4000</us-gaap:IncreaseDecreaseInDeferredLiabilities>
    <us-gaap:IncreaseDecreaseInDeferredLiabilities contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-9000</us-gaap:IncreaseDecreaseInDeferredLiabilities>
    <us-gaap:PaymentsToAcquirePropertyPlantAndEquipment contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">58000</us-gaap:PaymentsToAcquirePropertyPlantAndEquipment>
    <us-gaap:PaymentsToAcquirePropertyPlantAndEquipment contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">7000</us-gaap:PaymentsToAcquirePropertyPlantAndEquipment>
    <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">-58000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
    <us-gaap:NetCashProvidedByUsedInInvestingActivities contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-13000</us-gaap:NetCashProvidedByUsedInInvestingActivities>
    <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">2830000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
    <us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">2550000</us-gaap:NetCashProvidedByUsedInFinancingActivities>
    <us-gaap:ProceedsFromIssuanceOfCommonStock contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">2830000</us-gaap:ProceedsFromIssuanceOfCommonStock>
    <us-gaap:ProceedsFromIssuanceOfCommonStock contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1710000</us-gaap:ProceedsFromIssuanceOfCommonStock>
    <us-gaap:CostOfGoodsAndServicesSold contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">2896000</us-gaap:CostOfGoodsAndServicesSold>
    <us-gaap:CostOfGoodsAndServicesSold contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">728000</us-gaap:CostOfGoodsAndServicesSold>
    <dei:EntitySmallBusiness contextRef="From2019-08-01to2020-07-31">true</dei:EntitySmallBusiness>
    <dei:EntityEmergingGrowthCompany contextRef="From2019-08-01to2020-07-31">false</dei:EntityEmergingGrowthCompany>
    <PURE:InterestExpenseOnPromissoryNote contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <PURE:InterestExpenseOnPromissoryNote contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1000</PURE:InterestExpenseOnPromissoryNote>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">6917000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1909000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <PURE:ConversionOfPromissoryNoteAndAccruedInterestFromRelatedPartyToCommonStock contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <PURE:ConversionOfPromissoryNoteAndAccruedInterestFromRelatedPartyToCommonStock contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">504000</PURE:ConversionOfPromissoryNoteAndAccruedInterestFromRelatedPartyToCommonStock>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">555000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">1387000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">555000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1387000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">232000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">1062000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">232000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1062000</us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">473000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations contextRef="AsOf2018-07-31" unitRef="USD" decimals="0">926000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">3914000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">398000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:CashAndCashEquivalentsAtCarryingValue contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">3839000</us-gaap:CashAndCashEquivalentsAtCarryingValue>
    <us-gaap:AccountsReceivableNetCurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">373000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:AccountsReceivableNetCurrent contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">1089000</us-gaap:AccountsReceivableNetCurrent>
    <us-gaap:PrepaidExpenseCurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">18000</us-gaap:PrepaidExpenseCurrent>
    <us-gaap:PrepaidExpenseCurrent contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">16000</us-gaap:PrepaidExpenseCurrent>
    <us-gaap:AssetsCurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">1041000</us-gaap:AssetsCurrent>
    <us-gaap:AssetsCurrent contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">5566000</us-gaap:AssetsCurrent>
    <us-gaap:PropertyPlantAndEquipmentNet contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">362000</us-gaap:PropertyPlantAndEquipmentNet>
    <us-gaap:PropertyPlantAndEquipmentNet contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">316000</us-gaap:PropertyPlantAndEquipmentNet>
    <us-gaap:FiniteLivedIntangibleAssetsNet contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">529000</us-gaap:FiniteLivedIntangibleAssetsNet>
    <us-gaap:FiniteLivedIntangibleAssetsNet contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">441000</us-gaap:FiniteLivedIntangibleAssetsNet>
    <us-gaap:AccountsPayableCurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">553000</us-gaap:AccountsPayableCurrent>
    <us-gaap:AccountsPayableCurrent contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">1344000</us-gaap:AccountsPayableCurrent>
    <us-gaap:AccountsPayableCurrent contextRef="AsOf2020-07-31_custom_BoardFeesDuetoOfficersAndDirectorsMember" unitRef="USD" decimals="0">60000</us-gaap:AccountsPayableCurrent>
    <us-gaap:AccountsPayableCurrent contextRef="AsOf2019-07-31_custom_BoardFeesDuetoOfficersAndDirectorsMember" unitRef="USD" decimals="0">60000</us-gaap:AccountsPayableCurrent>
    <us-gaap:AccruedLiabilitiesCurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">185000</us-gaap:AccruedLiabilitiesCurrent>
    <us-gaap:AccruedLiabilitiesCurrent contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">168000</us-gaap:AccruedLiabilitiesCurrent>
    <us-gaap:LiabilitiesCurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">738000</us-gaap:LiabilitiesCurrent>
    <us-gaap:LiabilitiesCurrent contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">1512000</us-gaap:LiabilitiesCurrent>
    <us-gaap:DeferredRentCreditNoncurrent contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">4000</us-gaap:DeferredRentCreditNoncurrent>
    <us-gaap:DeferredRentCreditNoncurrent contextRef="AsOf2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:Liabilities contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">742000</us-gaap:Liabilities>
    <us-gaap:Liabilities contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">1512000</us-gaap:Liabilities>
    <us-gaap:PreferredStockValue contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:PreferredStockValue contextRef="AsOf2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:CommonStockValue contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">768000</us-gaap:CommonStockValue>
    <us-gaap:CommonStockValue contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">871000</us-gaap:CommonStockValue>
    <us-gaap:AdditionalPaidInCapital contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">123900000</us-gaap:AdditionalPaidInCapital>
    <us-gaap:AdditionalPaidInCapital contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">127414000</us-gaap:AdditionalPaidInCapital>
    <us-gaap:RetainedEarningsAccumulatedDeficit contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">-123478000</us-gaap:RetainedEarningsAccumulatedDeficit>
    <us-gaap:RetainedEarningsAccumulatedDeficit contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">-123474000</us-gaap:RetainedEarningsAccumulatedDeficit>
    <us-gaap:LiabilitiesAndStockholdersEquity contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">1932000</us-gaap:LiabilitiesAndStockholdersEquity>
    <us-gaap:LiabilitiesAndStockholdersEquity contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">6323000</us-gaap:LiabilitiesAndStockholdersEquity>
    <us-gaap:InterestExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">5000</us-gaap:InterestExpense>
    <us-gaap:InterestExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">6000</us-gaap:InterestExpense>
    <us-gaap:InventoryNet contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">177000</us-gaap:InventoryNet>
    <us-gaap:InventoryNet contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">547000</us-gaap:InventoryNet>
    <us-gaap:RestrictedCash contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">75000</us-gaap:RestrictedCash>
    <us-gaap:RestrictedCash contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">75000</us-gaap:RestrictedCash>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">473000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">3914000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>
    <us-gaap:CommitmentsAndContingencies contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">3441000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect>
    <us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-453000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect>
    <us-gaap:SharesOutstanding contextRef="AsOf2018-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">68248158</us-gaap:SharesOutstanding>
    <us-gaap:SharesOutstanding contextRef="AsOf2019-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">76732334</us-gaap:SharesOutstanding>
    <us-gaap:SharesOutstanding contextRef="AsOf2020-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">87072951</us-gaap:SharesOutstanding>
    <us-gaap:StockholdersEquity contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">1190000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2018-07-31" unitRef="USD" decimals="0">1281000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2018-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">683000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2019-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">768000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2018-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">117522000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">123900000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2018-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" decimals="0">-116924000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" decimals="0">-123478000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">4811000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2020-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">871000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">127414000</us-gaap:StockholdersEquity>
    <us-gaap:StockholdersEquity contextRef="AsOf2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" decimals="0">-123474000</us-gaap:StockholdersEquity>
    <us-gaap:IncomeTaxesPaidNet contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">4000</us-gaap:IncomeTaxesPaidNet>
    <us-gaap:IncomeTaxesPaidNet contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">5000</us-gaap:IncomeTaxesPaidNet>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">2830000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2018-08-15to2018-08-16_us-gaap_SubsequentEventMember_us-gaap_PrivatePlacementMember" unitRef="USD" decimals="0">1500000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">58000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">2156000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2019-10-01to2019-10-02_us-gaap_PrivatePlacementMember" unitRef="USD" decimals="0">830000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">97000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">2733000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodValueNewIssues contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">2214000</us-gaap:StockIssuedDuringPeriodValueNewIssues>
    <us-gaap:StockIssuedDuringPeriodSharesNewIssues contextRef="From2018-08-15to2018-08-16_us-gaap_SubsequentEventMember_us-gaap_PrivatePlacementMember" unitRef="Shares" decimals="INF">3333964</us-gaap:StockIssuedDuringPeriodSharesNewIssues>
    <us-gaap:StockIssuedDuringPeriodSharesNewIssues contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">5802927</us-gaap:StockIssuedDuringPeriodSharesNewIssues>
    <us-gaap:StockIssuedDuringPeriodSharesNewIssues contextRef="From2019-10-01to2019-10-02_us-gaap_PrivatePlacementMember" unitRef="Shares" decimals="INF">2862068</us-gaap:StockIssuedDuringPeriodSharesNewIssues>
    <us-gaap:StockIssuedDuringPeriodSharesNewIssues contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">9758619</us-gaap:StockIssuedDuringPeriodSharesNewIssues>
    <us-gaap:StockIssuedDuringPeriodSharesNewIssues contextRef="From2019-08-01to2020-07-31_custom_EmployeesOfficersAndDirectorsMember" unitRef="Shares" decimals="INF">181998</us-gaap:StockIssuedDuringPeriodSharesNewIssues>
    <us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">281250</us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross>
    <us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">400000</us-gaap:StockIssuedDuringPeriodSharesRestrictedStockAwardGross>
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">3000</us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross>
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">-3000</us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross>
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">4000</us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross>
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">-4000</us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross>
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross contextRef="From2018-08-01to2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:EarningsPerShareBasic contextRef="From2019-08-01to2020-07-31" unitRef="USDPShares" decimals="INF">0</us-gaap:EarningsPerShareBasic>
    <us-gaap:EarningsPerShareBasic contextRef="From2018-08-01to2019-07-31" unitRef="USDPShares" decimals="INF">-0.09</us-gaap:EarningsPerShareBasic>
    <us-gaap:EarningsPerShareDiluted contextRef="From2019-08-01to2020-07-31" unitRef="USDPShares" decimals="INF">0</us-gaap:EarningsPerShareDiluted>
    <us-gaap:EarningsPerShareDiluted contextRef="From2018-08-01to2019-07-31" unitRef="USDPShares" decimals="INF">-0.09</us-gaap:EarningsPerShareDiluted>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">82209487</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">72880484</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">84611822</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">72880484</us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">960000</us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued>
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">960000</us-gaap:AdjustmentsToAdditionalPaidInCapitalWarrantIssued>
    <us-gaap:ProceedsFromWarrantExercises contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:ProceedsFromWarrantExercises contextRef="From2019-02-18to2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_MrTomYLeeMember" unitRef="USD" decimals="0">746666</us-gaap:ProceedsFromWarrantExercises>
    <us-gaap:ProceedsFromWarrantExercises contextRef="From2019-02-18to2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_DaleOkunoMember" unitRef="USD" decimals="0">74666</us-gaap:ProceedsFromWarrantExercises>
    <us-gaap:ProceedsFromWarrantExercises contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">840000</us-gaap:ProceedsFromWarrantExercises>
    <us-gaap:ProceedsFromWarrantExercises contextRef="From2019-02-18to2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember" unitRef="USD" decimals="0">840000</us-gaap:ProceedsFromWarrantExercises>
    <us-gaap:PaymentsToAcquireIntangibleAssets contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:PaymentsToAcquireIntangibleAssets contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">6000</us-gaap:PaymentsToAcquireIntangibleAssets>
    <us-gaap:Assets contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">1932000</us-gaap:Assets>
    <us-gaap:Assets contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">6323000</us-gaap:Assets>
    <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">669000</us-gaap:NetCashProvidedByUsedInOperatingActivities>
    <us-gaap:NetCashProvidedByUsedInOperatingActivities contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">-2990000</us-gaap:NetCashProvidedByUsedInOperatingActivities>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerOneMember" unitRef="Percent" decimals="INF">0.16</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerTwoMember" unitRef="Percent" decimals="INF">0.13</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerOneMember" unitRef="Percent" decimals="INF">0.15</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerTwoMember" unitRef="Percent" decimals="INF">0.10</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_CustomerOneMember" unitRef="Percent" decimals="INF">0.21</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_CustomerTwoMember" unitRef="Percent" decimals="INF">0.16</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_CustomerThreeMember" unitRef="Percent" decimals="INF">0.11</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_OneCustomerMember" unitRef="Percent" decimals="INF">0.36</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_AccountsReceivableMember_custom_TwoCustomersMember" unitRef="Percent" decimals="INF">0.20</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_custom_AccountsPayablesMember_custom_VendorOneMember" unitRef="Percent" decimals="INF">0.66</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_custom_AccountsPayablesMember_custom_VendorTwoMember" unitRef="Percent" decimals="INF">0.13</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_custom_AccountsPayablesMember_custom_VendorOneMember" unitRef="Percent" decimals="INF">0.14</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_custom_PurchasesMember_custom_VendorOneMember" unitRef="Percent" decimals="INF">0.18</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_custom_PurchasesMember_custom_VendorOneMember" unitRef="Percent" decimals="INF">0.54</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_SalesRevenueNetMember_custom_OneIndividualCustomerMember" unitRef="Percent" decimals="INF">0.16</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_SalesRevenueNetMember_custom_OneIndividualCustomerMember" unitRef="Percent" decimals="INF">0.15</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_SalesRevenueNetMember_custom_TwoIndividualCustomerMember" unitRef="Percent" decimals="INF">0.13</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_SalesRevenueNetMember_custom_TwoIndividualCustomerMember" unitRef="Percent" decimals="INF">0.11</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_SalesRevenueNetMember_custom_ThreeIndividualCustomerMember" unitRef="Percent" decimals="INF">0.11</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerThreeMember" unitRef="Percent" decimals="INF">0.11</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_IndividualCustomerMember" unitRef="Percent" decimals="INF">0.10</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_country_US" unitRef="Percent" decimals="INF">0.98</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2019-08-01to2020-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_ForeignMember" unitRef="Percent" decimals="INF">0.02</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:ConcentrationRiskPercentage1 contextRef="From2018-08-01to2019-07-31_us-gaap_CustomerConcentrationRiskMember_us-gaap_SalesRevenueNetMember_custom_NoOtherIndividualCustomerMember" unitRef="Percent" decimals="INF">0.11</us-gaap:ConcentrationRiskPercentage1>
    <us-gaap:RevenueFromRelatedParties contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">124000</us-gaap:RevenueFromRelatedParties>
    <us-gaap:RestrictedCashAndCashEquivalents contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">75000</us-gaap:RestrictedCashAndCashEquivalents>
    <us-gaap:RestrictedCashAndCashEquivalents contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">75000</us-gaap:RestrictedCashAndCashEquivalents>
    <PURE:InducementToExerciseWarrant contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <PURE:InducementToExerciseWarrant contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">960000</PURE:InducementToExerciseWarrant>
    <PURE:StockIssuedDuringPeriodSharesWarrantsExercised contextRef="From2019-08-01to2020-07-31" unitRef="Shares" xsi:nil="true" />
    <PURE:StockIssuedDuringPeriodSharesWarrantsExercised contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">2399999</PURE:StockIssuedDuringPeriodSharesWarrantsExercised>
    <PURE:StockIssuedDuringPeriodSharesWarrantsExercised contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="Shares" decimals="INF">181998</PURE:StockIssuedDuringPeriodSharesWarrantsExercised>
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2018-08-01to2019-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">24000</PURE:StockIssuedDuringPeriodValueWarrantsExercised>
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2018-08-01to2019-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">816000</PURE:StockIssuedDuringPeriodValueWarrantsExercised>
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2018-08-01to2019-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2019-08-01to2020-07-31_us-gaap_CommonStockMember" unitRef="USD" decimals="0">2000</PURE:StockIssuedDuringPeriodValueWarrantsExercised>
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2019-08-01to2020-07-31_us-gaap_AdditionalPaidInCapitalMember" unitRef="USD" decimals="0">-2000</PURE:StockIssuedDuringPeriodValueWarrantsExercised>
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2019-08-01to2020-07-31_us-gaap_RetainedEarningsMember" unitRef="USD" xsi:nil="true" />
    <PURE:StockIssuedDuringPeriodValueWarrantsExercised contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">840000</PURE:StockIssuedDuringPeriodValueWarrantsExercised>
    <us-gaap:ProceedsFromNotesPayable contextRef="From2018-06-27to2018-06-28_custom_TomYLeeMember" unitRef="USD" decimals="0">500000</us-gaap:ProceedsFromNotesPayable>
    <us-gaap:IncomeTaxExpenseBenefit contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">1650</us-gaap:IncomeTaxExpenseBenefit>
    <us-gaap:IncomeTaxExpenseBenefit contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1650</us-gaap:IncomeTaxExpenseBenefit>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">108300000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">106200000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic contextRef="AsOf2020-07-31_custom_FederalMember_custom_PreviouslyUtilizedMember" unitRef="USD" decimals="0">2400000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic contextRef="AsOf2020-07-31_custom_FederalMember_custom_CarriedForwardIndefinitelyMember" unitRef="USD" decimals="0">2400000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">62100000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">61800000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal>
    <PURE:OwnershipChangePercentage contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.50</PURE:OwnershipChangePercentage>
    <us-gaap:OperatingLossCarryforwardsExpirationDate contextRef="From2019-08-01to2020-07-31_custom_FederalMember_custom_PreviouslyUtilizedMember">2038-07-31</us-gaap:OperatingLossCarryforwardsExpirationDate>
    <PURE:OperatingLossCarryforwardsExpirationDateDescription contextRef="From2019-08-01to2020-07-31_custom_StateMember_custom_CarriedForwardIndefinitelyMember">Our state tax loss carry-forwards began to expire in the year ending July 31, 2029, and will completely expire in the year ending July 31, 2040.</PURE:OperatingLossCarryforwardsExpirationDateDescription>
    <us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued contextRef="AsOf2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:UnrecognizedTaxBenefits contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:UnrecognizedTaxBenefits contextRef="AsOf2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:DeferredTaxAssetsNet contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:DeferredTaxAssetsNet contextRef="AsOf2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:DeferredTaxAssetsValuationAllowance contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">28840000</us-gaap:DeferredTaxAssetsValuationAllowance>
    <us-gaap:DeferredTaxAssetsValuationAllowance contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">28370000</us-gaap:DeferredTaxAssetsValuationAllowance>
    <us-gaap:DeferredTaxAssetsGross contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">28840000</us-gaap:DeferredTaxAssetsGross>
    <us-gaap:DeferredTaxAssetsGross contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">28370000</us-gaap:DeferredTaxAssetsGross>
    <us-gaap:DeferredTaxAssetsOther contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">-130000</us-gaap:DeferredTaxAssetsOther>
    <us-gaap:DeferredTaxAssetsOther contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">-120000</us-gaap:DeferredTaxAssetsOther>
    <PURE:DeferredTaxAssetsStockOptionsAndWarrants contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">2030000</PURE:DeferredTaxAssetsStockOptionsAndWarrants>
    <PURE:DeferredTaxAssetsStockOptionsAndWarrants contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">1950000</PURE:DeferredTaxAssetsStockOptionsAndWarrants>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwards contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">26940000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwards>
    <us-gaap:DeferredTaxAssetsOperatingLossCarryforwards contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">26540000</us-gaap:DeferredTaxAssetsOperatingLossCarryforwards>
    <us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.00</us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate>
    <us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">0.210</us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate>
    <us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.00</us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes>
    <us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">0.006</us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes>
    <us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.00</us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments>
    <us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">-0.183</us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments>
    <us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.00</us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance>
    <us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">0.00</us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance>
    <us-gaap:EffectiveIncomeTaxRateContinuingOperations contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.00</us-gaap:EffectiveIncomeTaxRateContinuingOperations>
    <us-gaap:EffectiveIncomeTaxRateContinuingOperations contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">-0.033</us-gaap:EffectiveIncomeTaxRateContinuingOperations>
    <us-gaap:DebtInstrumentTerm contextRef="From2018-06-27to2018-06-28_custom_TomYLeeMember">P1Y</us-gaap:DebtInstrumentTerm>
    <us-gaap:DebtInstrumentInterestRateStatedPercentage contextRef="AsOf2018-06-28_custom_TomYLeeMember" unitRef="Percent" decimals="INF">0.065</us-gaap:DebtInstrumentInterestRateStatedPercentage>
    <us-gaap:DebtInstrumentFaceAmount contextRef="AsOf2018-08-16" unitRef="USD" decimals="0">500000</us-gaap:DebtInstrumentFaceAmount>
    <us-gaap:InterestPayableCurrentAndNoncurrent contextRef="AsOf2018-08-16" unitRef="USD" decimals="0">4000</us-gaap:InterestPayableCurrentAndNoncurrent>
    <us-gaap:DebtConversionConvertedInstrumentSharesIssued1 contextRef="From2018-08-15to2018-08-16" unitRef="Shares" decimals="INF">1120633</us-gaap:DebtConversionConvertedInstrumentSharesIssued1>
    <us-gaap:PaymentsForRent contextRef="From2019-07-28to2019-07-29_custom_SubleaseAgreementMember_custom_SwabPlusLPMember" unitRef="USD" decimals="0">2333</us-gaap:PaymentsForRent>
    <us-gaap:SaleOfStockConsiderationReceivedOnTransaction contextRef="From2019-08-01to2020-07-31_custom_HarmonyBioscienceIncMember_custom_MrTomYLeeMember" unitRef="USD" decimals="0">124000</us-gaap:SaleOfStockConsiderationReceivedOnTransaction>
    <us-gaap:AllowanceForDoubtfulAccountsReceivable contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:AllowanceForDoubtfulAccountsReceivable contextRef="AsOf2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:ImpairmentOfLongLivedAssetsHeldForUse contextRef="From2019-08-01to2020-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:ImpairmentOfLongLivedAssetsHeldForUse contextRef="From2018-08-01to2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">2402335</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">9736772</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:Depreciation contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">104000</us-gaap:Depreciation>
    <us-gaap:Depreciation contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">106000</us-gaap:Depreciation>
    <us-gaap:AmortizationOfIntangibleAssets contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">88000</us-gaap:AmortizationOfIntangibleAssets>
    <us-gaap:AmortizationOfIntangibleAssets contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">135000</us-gaap:AmortizationOfIntangibleAssets>
    <us-gaap:InventoryRawMaterials contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">30000</us-gaap:InventoryRawMaterials>
    <us-gaap:InventoryRawMaterials contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">17000</us-gaap:InventoryRawMaterials>
    <us-gaap:InventoryFinishedGoods contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">147000</us-gaap:InventoryFinishedGoods>
    <us-gaap:InventoryFinishedGoods contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">530000</us-gaap:InventoryFinishedGoods>
    <us-gaap:PropertyPlantAndEquipmentGross contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">1022000</us-gaap:PropertyPlantAndEquipmentGross>
    <us-gaap:PropertyPlantAndEquipmentGross contextRef="AsOf2019-07-31_us-gaap_FurnitureAndFixturesMember" unitRef="USD" decimals="0">21000</us-gaap:PropertyPlantAndEquipmentGross>
    <us-gaap:PropertyPlantAndEquipmentGross contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">819000</us-gaap:PropertyPlantAndEquipmentGross>
    <us-gaap:PropertyPlantAndEquipmentGross contextRef="AsOf2020-07-31_custom_ComputersAndEquipmentMember" unitRef="USD" decimals="0">819000</us-gaap:PropertyPlantAndEquipmentGross>
    <us-gaap:PropertyPlantAndEquipmentGross contextRef="AsOf2019-07-31_custom_ComputersAndEquipmentMember" unitRef="USD" decimals="0">1001000</us-gaap:PropertyPlantAndEquipmentGross>
    <us-gaap:PropertyPlantAndEquipmentGross contextRef="AsOf2020-07-31_us-gaap_FurnitureAndFixturesMember" unitRef="USD" xsi:nil="true" />
    <us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">660000</us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment>
    <us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">503000</us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment>
    <us-gaap:FiniteLivedIntangibleAssetsGross contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">3504000</us-gaap:FiniteLivedIntangibleAssetsGross>
    <us-gaap:FiniteLivedIntangibleAssetsGross contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">3504000</us-gaap:FiniteLivedIntangibleAssetsGross>
    <us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">2975000</us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization>
    <us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">3063000</us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">76000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">48000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">42000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">42000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">42000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">191000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive>
    <us-gaap:OperatingLeasesRentExpenseNet contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">37000</us-gaap:OperatingLeasesRentExpenseNet>
    <us-gaap:OperatingLeasesRentExpenseNet contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">111000</us-gaap:OperatingLeasesRentExpenseNet>
    <us-gaap:OperatingLeasesRentExpenseNet contextRef="From2019-08-01to2020-07-31_custom_SubleaseAgreementMember_custom_SwabPlusLPMember" unitRef="USD" decimals="0">2333</us-gaap:OperatingLeasesRentExpenseNet>
    <PURE:LeaseExpirationDateDescription contextRef="From2019-08-01to2020-07-31">The Sublease expires December 2020.</PURE:LeaseExpirationDateDescription>
    <us-gaap:SharesIssuedPricePerShare contextRef="AsOf2018-08-16_us-gaap_SubsequentEventMember_us-gaap_PrivatePlacementMember" unitRef="USDPShares" decimals="INF">0.45</us-gaap:SharesIssuedPricePerShare>
    <us-gaap:SharesIssuedPricePerShare contextRef="AsOf2019-10-02_us-gaap_PrivatePlacementMember" unitRef="USDPShares" decimals="INF">0.29</us-gaap:SharesIssuedPricePerShare>
    <us-gaap:Investments contextRef="AsOf2018-07-31_custom_MrTomYLeeMember" unitRef="USD" decimals="0">1000000</us-gaap:Investments>
    <us-gaap:Investments contextRef="AsOf2019-10-02_us-gaap_PrivatePlacementMember_custom_TomYLeeMember" unitRef="USD" decimals="0">290000</us-gaap:Investments>
    <us-gaap:Investments contextRef="AsOf2019-10-02_us-gaap_PrivatePlacementMember_custom_DaleOkunoMember" unitRef="USD" decimals="0">250000</us-gaap:Investments>
    <us-gaap:Investments contextRef="AsOf2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember_custom_MessrsDaleOkunoMember" unitRef="USD" decimals="0">250000</us-gaap:Investments>
    <us-gaap:Investments contextRef="AsOf2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember_custom_IvenChenMember" unitRef="USD" decimals="0">35000</us-gaap:Investments>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2018-08-15to2018-08-16_us-gaap_SubsequentEventMember_us-gaap_PrivatePlacementMember" unitRef="USD" decimals="0">1500000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2019-10-01to2019-10-02_us-gaap_PrivatePlacementMember" unitRef="USD" decimals="0">830000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2020-03-08to2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember" unitRef="USD" decimals="0">2000000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2020-03-08to2020-03-09_custom_MrTomYLeeMember" unitRef="USD" decimals="0">650500</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2020-03-08to2020-03-09_custom_DaleOkunoMember" unitRef="USD" decimals="0">450000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2020-03-08to2020-03-09_custom_IvenChenMember" unitRef="USD" decimals="0">52000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2020-03-08to2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember_custom_NetProceedsAfterDeductionsOfExpensesMember" unitRef="USD" decimals="0">2000000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:ProceedsFromIssuanceOfPrivatePlacement contextRef="From2018-08-01to2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember" unitRef="USD" decimals="0">716000</us-gaap:ProceedsFromIssuanceOfPrivatePlacement>
    <us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction contextRef="From2020-03-08to2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember" unitRef="Shares" decimals="INF">6896551</us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction>
    <us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction contextRef="From2018-08-01to2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember" unitRef="Shares" decimals="INF">2468963</us-gaap:SaleOfStockNumberOfSharesIssuedInTransaction>
    <us-gaap:SaleOfStockPricePerShare contextRef="AsOf2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember" unitRef="USDPShares" decimals="INF">0.29</us-gaap:SaleOfStockPricePerShare>
    <us-gaap:SaleOfStockPricePerShare contextRef="AsOf2019-07-31_us-gaap_PrivatePlacementMember_custom_MayJuneJulyTwoThousandNineteenMember" unitRef="USDPShares" decimals="INF">0.29</us-gaap:SaleOfStockPricePerShare>
    <PURE:DiscountRateOnClosingPricePercentage contextRef="From2020-03-08to2020-03-09_custom_AccreditedInvestorsMember_us-gaap_PrivatePlacementMember" unitRef="Percent" decimals="INF">0.20</PURE:DiscountRateOnClosingPricePercentage>
    <us-gaap:DebtConversionConvertedInstrumentAmount1 contextRef="From2017-08-01to2018-07-31_us-gaap_PrivatePlacementMember" unitRef="USD" decimals="0">500000</us-gaap:DebtConversionConvertedInstrumentAmount1>
    <us-gaap:InvestmentOwnedAtCost contextRef="AsOf2018-07-31_custom_MrTomYLeeMember" unitRef="USD" decimals="0">500000</us-gaap:InvestmentOwnedAtCost>
    <PURE:CancellationOfIndebtednessAmount contextRef="AsOf2018-07-31_custom_MrTomYLeeMember" unitRef="USD" decimals="0">500000</PURE:CancellationOfIndebtednessAmount>
    <us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 contextRef="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember_srt_MinimumMember" unitRef="USDPShares" decimals="INF">0.35</us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1>
    <us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 contextRef="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember_srt_MaximumMember" unitRef="USDPShares" decimals="INF">0.75</us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1>
    <us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 contextRef="AsOf2020-07-31_custom_WarrantOneMember" unitRef="USDPShares" decimals="INF">1.25</us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1>
    <us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 contextRef="AsOf2020-07-31_custom_WarrantTwoMember" unitRef="USDPShares" decimals="INF">1.28</us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1>
    <us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 contextRef="AsOf2020-07-31_custom_WarrantThreeMember" unitRef="USDPShares" decimals="INF">1.25</us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1>
    <us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 contextRef="AsOf2020-07-31_custom_WarrantFourMember" unitRef="USDPShares" decimals="INF">1.28</us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1>
    <us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights contextRef="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_MrTomYLeeMember" unitRef="Shares" decimals="INF">2133333</us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights>
    <us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights contextRef="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_DaleOkunoMember" unitRef="Shares" decimals="INF">213333</us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights>
    <us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights contextRef="AsOf2019-02-19_custom_TwoThousandFourteenWarrantsMember_custom_ThreeHoldersMember" unitRef="Shares" decimals="INF">2399999</us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights>
    <PURE:WarrantExpense contextRef="AsOf2019-07-31_custom_TwoThousandFourteenWarrantsMember" unitRef="USD" decimals="0">960000</PURE:WarrantExpense>
    <us-gaap:StockIssuedDuringPeriodSharesIssuedForServices contextRef="From2017-08-01to2017-10-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember" unitRef="Shares" decimals="INF">50000</us-gaap:StockIssuedDuringPeriodSharesIssuedForServices>
    <us-gaap:StockIssuedDuringPeriodValueIssuedForServices contextRef="From2017-08-01to2017-10-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember" unitRef="USD" decimals="0">51000</us-gaap:StockIssuedDuringPeriodValueIssuedForServices>
    <us-gaap:StockIssuedDuringPeriodValueIssuedForServices contextRef="From2018-08-01to2019-07-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember" unitRef="USD" decimals="0">25000</us-gaap:StockIssuedDuringPeriodValueIssuedForServices>
    <us-gaap:StockIssuedDuringPeriodValueIssuedForServices contextRef="From2019-08-01to2020-07-31_custom_TwoYearServiceAgreementMember_custom_BusinessDevelopmentServicesMember" unitRef="USD" decimals="0">4000</us-gaap:StockIssuedDuringPeriodValueIssuedForServices>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2019-07-31" unitRef="Shares" decimals="INF">461097</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2018-07-31" unitRef="Shares" decimals="INF">2861096</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">327765</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2020-07-31_custom_WarrantOneMember" unitRef="Shares" decimals="INF">58824</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2020-07-31_custom_WarrantTwoMember" unitRef="Shares" decimals="INF">117647</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2020-07-31_custom_WarrantThreeMember" unitRef="Shares" decimals="INF">117647</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef="AsOf2020-07-31_custom_WarrantFourMember" unitRef="Shares" decimals="INF">33647</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted contextRef="From2019-08-01to2020-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted contextRef="From2018-08-01to2019-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:WarrantsAndRightsOutstandingMaturityDate contextRef="AsOf2020-07-31_custom_WarrantOneMember">2021-12-01</us-gaap:WarrantsAndRightsOutstandingMaturityDate>
    <us-gaap:WarrantsAndRightsOutstandingMaturityDate contextRef="AsOf2020-07-31_custom_WarrantTwoMember">2021-12-01</us-gaap:WarrantsAndRightsOutstandingMaturityDate>
    <us-gaap:WarrantsAndRightsOutstandingMaturityDate contextRef="AsOf2020-07-31_custom_WarrantThreeMember">2022-01-23</us-gaap:WarrantsAndRightsOutstandingMaturityDate>
    <us-gaap:WarrantsAndRightsOutstandingMaturityDate contextRef="AsOf2020-07-31_custom_WarrantFourMember">2022-01-23</us-gaap:WarrantsAndRightsOutstandingMaturityDate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 contextRef="From2016-02-01to2016-02-29_custom_TwoThousandAndSevenEquityIncentivePlanMember">P10Y</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_ConsultantsAndOthersMember_srt_MinimumMember">P1Y</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_ConsultantsAndOthersMember_srt_MaximumMember">P3Y</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 contextRef="From2019-08-01to2020-07-31_custom_TwoThousandSeventeenEquityIncentivePlanMember">P10Y</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_ConsultantsAndOthersMember">P10Y</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">725000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">500000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">500000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="From2018-10-03to2018-10-04_us-gaap_RestrictedStockUnitsRSUMember_custom_MrMyersMember" unitRef="Shares" decimals="INF">500000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod contextRef="From2020-05-01to2020-05-31_us-gaap_RestrictedStockUnitsRSUMember_custom_MrMyersMember" unitRef="Shares" decimals="INF">500000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">1512500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber contextRef="AsOf2019-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">1912500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber contextRef="AsOf2018-10-04_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">2012500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber contextRef="AsOf2020-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">2012500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber contextRef="AsOf2018-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">1525000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">400000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">206250</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">400000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">400000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="From2018-10-03to2018-10-04_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">500000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_VestedAndIssuableMember" unitRef="Shares" decimals="INF">1512500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod>
    <us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized contextRef="AsOf2018-10-04_us-gaap_RestrictedStockUnitsRSUMember" unitRef="USD" decimals="0">227000</us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized>
    <us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized contextRef="AsOf2020-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="USD" decimals="0">227000</us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 contextRef="From2019-08-01to2020-07-31">P4Y18D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 contextRef="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember">P2Y9M</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 contextRef="From2018-10-03to2018-10-04_us-gaap_RestrictedStockUnitsRSUMember">P2Y9M</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceOneMember">P9Y2M8D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceTwoMember">P3Y7M17D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceThreeMember">P11M12D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1>
    <us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_SharesVestedDuringPeriodMember" unitRef="USD" decimals="0">70000</us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense>
    <us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_HenryRLambertMember" unitRef="USD" decimals="0">162000</us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense>
    <us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="USD" decimals="0">232000</us-gaap:EmployeeStockOwnershipPlanESOPCompensationExpense>
    <us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationGross contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_HenryRLambertMember" unitRef="Shares" decimals="INF">400000</us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationGross>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">555000</us-gaap:AllocatedShareBasedCompensationExpense>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="USD" decimals="0">1062000</us-gaap:AllocatedShareBasedCompensationExpense>
    <us-gaap:AllocatedShareBasedCompensationExpense contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1387000</us-gaap:AllocatedShareBasedCompensationExpense>
    <PURE:RestrictedSharesUnitsVestedAmount contextRef="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember_custom_PfanzelterMember" unitRef="USD" decimals="0">489000</PURE:RestrictedSharesUnitsVestedAmount>
    <PURE:RestrictedSharesUnitsVestedAmount contextRef="From2018-08-01to2019-07-31_custom_PfanzelterMember" unitRef="USD" decimals="0">739000</PURE:RestrictedSharesUnitsVestedAmount>
    <PURE:RestrictedStockUnitsVestedDescription contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember">These RSUs are issued upon settlement date which is defined as "for each Vested Unit, the earliest of (i) the ten-year anniversary of the Grant Date; (ii) sixty days after the date the Grantee's Service ceases for any reason and such cessation constitutes a "separation from service" within the meaning of Section 409A of the Code; (iii) the date of Grantee's death or (iv) the date of a Change in Control that constitutes a "change in control event" within the meaning of Section 409A of the Code".</PURE:RestrictedStockUnitsVestedDescription>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized contextRef="From2016-02-01to2016-02-29_custom_TwoThousandAndSevenEquityIncentivePlanMember" unitRef="Shares" decimals="INF">4000000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate contextRef="From2016-02-01to2016-02-29_custom_TwoThousandAndSevenEquityIncentivePlanMember">2026-02-04</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant contextRef="AsOf2020-07-31_custom_TwoThousandAndSevenEquityIncentivePlanMember" unitRef="Shares" decimals="INF">33000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant contextRef="AsOf2020-07-31_custom_TwoThousandSeventeenEquityIncentivePlanMember" unitRef="Shares" decimals="INF">181000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant>
    <us-gaap:CommonStockCapitalSharesReservedForFutureIssuance contextRef="AsOf2020-07-31_custom_TwoThousandSeventeenEquityIncentivePlanMember" unitRef="Shares" decimals="INF">5000000</us-gaap:CommonStockCapitalSharesReservedForFutureIssuance>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod contextRef="From2019-08-01to2020-07-31_custom_EmployeesOfficersAndDirectorsMember" unitRef="Shares" decimals="INF">2550000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod>
    <PURE:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodVaue contextRef="From2019-08-01to2020-07-31_custom_EmployeesOfficersAndDirectorsMember" unitRef="USD" decimals="0">946000</PURE:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodVaue>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward contextRef="From2019-08-01to2020-07-31_custom_EmployeesOfficersAndDirectorsMember">The vesting terms of the options vary between one and two years and carry a ten year term.</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward>
    <PURE:OptionsExpirationsTerm contextRef="From2019-08-01to2020-07-31">P5Y3M19D</PURE:OptionsExpirationsTerm>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">7065792</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber contextRef="AsOf2020-07-31_custom_ExercisePriceOneMember" unitRef="Shares" decimals="INF">541250</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber contextRef="AsOf2020-07-31_custom_ExercisePriceTwoMember" unitRef="Shares" decimals="INF">6505167</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber contextRef="AsOf2020-07-31_custom_ExercisePriceThreeMember" unitRef="Shares" decimals="INF">19375</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber>
    <us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1 contextRef="AsOf2020-07-31" unitRef="USDPShares" decimals="INF">0.88</us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1>
    <us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2 contextRef="From2019-08-01to2020-07-31">P4Y18D</us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue contextRef="From2019-08-01to2020-07-31" unitRef="USDPShares" decimals="INF">0.40</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue>
    <us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">731000</us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber contextRef="AsOf2019-07-31" unitRef="Shares" decimals="INF">7363125</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber contextRef="AsOf2018-07-31" unitRef="Shares" decimals="INF">7626093</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber contextRef="AsOf2020-07-31" unitRef="Shares" decimals="INF">9432875</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber contextRef="AsOf2020-07-31_custom_ExercisePriceOneMember" unitRef="Shares" decimals="INF">1440000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber contextRef="AsOf2020-07-31_custom_ExercisePriceTwoMember" unitRef="Shares" decimals="INF">7973500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber contextRef="AsOf2020-07-31_custom_ExercisePriceThreeMember" unitRef="Shares" decimals="INF">19375</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">2550000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">300000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">40250</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">562968</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice contextRef="AsOf2019-07-31" unitRef="USDPShares" decimals="INF">1.04</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice contextRef="AsOf2018-07-31" unitRef="USDPShares" decimals="INF">1.09</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice contextRef="AsOf2020-07-31" unitRef="USDPShares" decimals="INF">0.88</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice contextRef="AsOf2020-07-31_custom_ExercisePriceOneMember" unitRef="USDPShares" decimals="INF">0.34</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice contextRef="AsOf2020-07-31_custom_ExercisePriceTwoMember" unitRef="USDPShares" decimals="INF">0.97</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice contextRef="AsOf2020-07-31_custom_ExercisePriceThreeMember" unitRef="USDPShares" decimals="INF">6.72</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice contextRef="From2019-08-01to2020-07-31" unitRef="USDPShares" decimals="INF">0.58</us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice contextRef="From2018-08-01to2019-07-31" unitRef="USDPShares" decimals="INF">0.52</us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice contextRef="From2019-08-01to2020-07-31" unitRef="USDPShares" decimals="INF">0.82</us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice contextRef="From2018-08-01to2019-07-31" unitRef="USDPShares" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice contextRef="From2019-08-01to2020-07-31" unitRef="USDPShares" decimals="INF">11.41</us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice contextRef="From2018-08-01to2019-07-31" unitRef="USDPShares" decimals="INF">1.47</us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue contextRef="AsOf2019-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue contextRef="AsOf2018-07-31" unitRef="USD" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue contextRef="AsOf2020-07-31" unitRef="USD" decimals="0">5255000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue>
    <PURE:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAggregateIntrinsicValueOutstandingGranted contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">4300</PURE:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAggregateIntrinsicValueOutstandingGranted>
    <PURE:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestAggregateIntrinsicValueOutstandingGranted contextRef="From2018-08-01to2019-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.8315</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">0.7567</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.0089</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">0.0263</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate contextRef="From2019-08-01to2020-07-31" unitRef="Percent" decimals="INF">0.000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate contextRef="From2018-08-01to2019-07-31" unitRef="Percent" decimals="INF">0.000</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1 contextRef="From2019-08-01to2020-07-31">P5Y5M12D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1 contextRef="From2018-08-01to2019-07-31">P4Y9M18D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1>
    <us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">440000</us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised>
    <us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised contextRef="From2018-08-01to2019-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised contextRef="From2019-08-01to2020-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised contextRef="From2018-08-01to2019-07-31" unitRef="Shares" decimals="INF">2399999</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations contextRef="From2019-08-01to2020-07-31" unitRef="Shares" decimals="INF">133332</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeituresAndExpirations contextRef="From2018-08-01to2019-07-31" unitRef="Shares" xsi:nil="true" />
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod contextRef="From2018-08-01to2019-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" decimals="INF">131250</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod contextRef="From2019-08-01to2020-07-31_us-gaap_RestrictedStockUnitsRSUMember" unitRef="Shares" xsi:nil="true" />
    <us-gaap:OperatingLeaseLiability contextRef="AsOf2020-07-31_us-gaap_OtherLiabilitiesMember" unitRef="USD" decimals="0">12000</us-gaap:OperatingLeaseLiability>
    <us-gaap:OperatingLeasePayments contextRef="From2019-08-01to2020-07-31_custom_SubleaseAgreementMember_custom_SwabPlusLPMember" unitRef="USD" decimals="0">39000</us-gaap:OperatingLeasePayments>
    <us-gaap:GrossProfit contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">4021000</us-gaap:GrossProfit>
    <us-gaap:GrossProfit contextRef="From2018-08-01to2019-07-31" unitRef="USD" decimals="0">1181000</us-gaap:GrossProfit>
    <PURE:CashToFundOperations contextRef="From2019-08-01to2020-07-31" unitRef="USD" decimals="0">-2990000</PURE:CashToFundOperations>
    <us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceOneMember" unitRef="USDPShares" decimals="INF">0.25</us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit>
    <us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceTwoMember" unitRef="USDPShares" decimals="INF">0.51</us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit>
    <us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceOneMember" unitRef="USDPShares" decimals="INF">0.50</us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit>
    <us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceTwoMember" unitRef="USDPShares" decimals="INF">1.50</us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 contextRef="From2019-08-01to2020-07-31">P5Y3M19D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceOneMember">P9Y3M15D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceTwoMember">P4Y7M2D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2>
    <us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2 contextRef="From2019-08-01to2020-07-31_custom_ExercisePriceThreeMember">P11M12D</us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice contextRef="AsOf2020-07-31_custom_ExercisePriceOneMember" unitRef="USDPShares" decimals="INF">0.34</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice>
    <dei:AmendmentDescription contextRef="From2019-08-01to2020-07-31">This Post-Effective Amendment is being filed to update the registration statement (the "Original Registration Statement") filed by PURE Bioscience, Inc. (the "Company", "we", "our" or "us") on February 6, 2017 and declared effective by the Securities and Exchange Commission on February 15, 2017, which registered for resale (i) up to 1,572,941 shares of common stock issued to the selling security holders in the registrant's private placement offering (the "Private Placement Offering"), which closed on December 1, 2016 and January 23, 2017 (the "Closings") and (ii) up to 1,572,941 shares of our common stock issuable upon the exercise of warrants (the "2017 Warrants") issued to the selling security holders in the Private Placement Offering, as amended pursuant to the Post-Effective Amendment No. 1 filed on August 25, 2017 and declared effective by the Securities Exchange Commission on September 1, 2017 ("POS AM 1"), Post-Effective Amendment No. 2 filed on October 26, 2017 and declared effective by the Securities Exchange Commission on October 31, 2017 ("POS AM 2"), Post-Effective Amendment No. 3 filed on October 25, 2018 and declared effective by the Securities Exchange Commission on October 31, 2018 ("POS AM 3"), and Post-Effective Amendment No. 4 filed on October 31, 2019 and declared effective by the Securities Exchange Commission on November 4, 2020 ("POS Am 4"), together with the Original Registration Statement, POS AM 1, POS AM 2, and POS AM 3, the "Registration Statement"). This Post-Effective amendment updates the prospectus dated October 31, 2019 to reflect the filing of the Company's Annual Report on Form 10-K for the year ended July 31, 2020. All applicable registration fees were paid at the time of the original filing of the Registration Statement.</dei:AmendmentDescription>
    <us-gaap:Cash contextRef="AsOf2019-07-31" unitRef="USD" decimals="0">398000</us-gaap:Cash>
    <us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;1. Organization and Business&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;All references to &amp;#8220;PURE,&amp;#8221; &amp;#8220;we&amp;#8221;,&#13;&amp;#8220;our,&amp;#8221; and &amp;#8220;us&amp;#8221; refer to PURE Bioscience, Inc. and our wholly owned subsidiary.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;PURE Bioscience, Inc. is focused on developing&#13;and commercializing our proprietary antimicrobial products that provide solutions to the health and environmental challenges of&#13;pathogen and hygienic control. Our technology platform is based on patented stabilized ionic silver, and our initial products contain&#13;silver dihydrogen citrate, or SDC. SDC is a broad-spectrum, non-toxic antimicrobial agent that is manufactured as a liquid delivered&#13;in various concentrations. We currently distribute and contract the manufacture and distribution of our SDC-based disinfecting&#13;and sanitizing products. We also contract manufacture and sell SDC-based formulations to manufacturers for use as a raw material&#13;ingredient in the production of personal care products. We believe our technology platform has potential application in a number&#13;of industries. We intend to focus our current resources on providing food safety solutions to the food industry.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We were incorporated in the state of California&#13;in August 1992 as Innovative Medical Services. In September 2003, we changed our name to PURE Bioscience. In March 2011, we reincorporated&#13;in the state of Delaware. We operate in one business segment.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Liquidity &lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We have a history of recurring losses, and&#13;as of July 31, 2020 we have incurred a cumulative net loss of $123,474,000. During the fiscal year ended July 31, 2019, we had&#13;a net loss of $6,554,000 and net product sales of $1,909,000. In addition, our cash on hand at July 31, 2019 was $398,000 and we&#13;used $2,990,000 in cash to fund operations. During the fiscal year ended July 31, 2020, our financial performance significantly&#13;improved, and we recorded net income of $4,000, recorded net product sales of $6,917,000 and generated $669,000 of cash flows from&#13;operations. In addition, during the year ended July 31, 2020, we raised $2,830,000 through the sale of our common stock, resulting&#13;in a cash balance of $3,839,000 and stockholders&amp;#8217; equity of $4,811,000 at July 31, 2020. Based on current projections, we&#13;believe our available cash on-hand, our current efforts to market and sell our products, and our ability to significantly reduce&#13;expenses, will provide sufficient cash resources to satisfy our operational needs, for at least one year from the date these financial&#13;statements are issued.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our future capital requirements depend on numerous&#13;forward-looking factors. These factors may include, but are not limited to, the following: the acceptance of, and demand for, our&#13;products; our success and the success of our partners in selling our products; our success and the success of our partners in obtaining&#13;regulatory approvals to sell our products; the costs of further developing our existing products and technologies; the extent to&#13;which we invest in new product and technology development; and the costs associated with the continued operation, and any future&#13;growth, of our business. The outcome of these and other forward-looking factors will substantially affect our liquidity and capital&#13;resources.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Until we can continually generate positive&#13;cash flow from operations, we will need to continue to fund our operations with the proceeds of offerings of our equity and debt&#13;securities. However, we cannot assure you that additional financing will be available when needed or that, if available, financing&#13;will be obtained on terms favorable to us or to our stockholders. If we raise additional funds from the issuance of equity securities,&#13;substantial dilution to our existing stockholders would likely result. If we raise additional funds by incurring debt financing,&#13;the terms of the debt may involve significant cash payment obligations as well as covenants and specific financial ratios that&#13;may restrict our ability to operate our business.&lt;/p&gt;</us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock>
    <us-gaap:SignificantAccountingPoliciesTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;2. Summary of Significant Accounting Policies&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Basis of Presentation&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The accompanying consolidated financial statements&#13;include the consolidated accounts of PURE Bioscience, Inc. and its wholly owned subsidiary, ETIH2O Inc., a Nevada corporation.&#13;ETIH2O Inc. has no business and no material assets or liabilities and there have been no significant transactions related to ETIH2O&#13;Inc. during the periods presented in the consolidated financial statements. All inter-company balances and transactions have been&#13;eliminated.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Revenue Recognition&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Effective August 1, 2018, we adopted the Financial&#13;Accounting Standards Board (&amp;#8220;FASB&amp;#8221;) Accounting Standards Codification (&amp;#8220;ASC&amp;#8221;), Topic 606, Revenue from&#13;Contracts with Customers (&amp;#8220;Topic 606&amp;#8221;). Under Topic 606, revenue is recognized at an amount that reflects the consideration&#13;to which we expect to be entitled in exchange for transferring goods or services to a customer. This principle is applied using&#13;the following 5-step process:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="width: 24px"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 24px"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Identify the contract with the customer&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Identify the performance obligations in the contract&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Determine the transaction price&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Allocate the transaction price to the performance obligations in the contract&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Recognize revenue when (or as) each performance obligation is satisfied&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Under Topic 606, we recognize revenue when&#13;we satisfy a performance obligation by transferring control of the promised goods or services to our customers, in an amount that&#13;reflects the consideration we expect to be entitled to in exchange for those goods or services.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our technology platform is based on patented&#13;stabilized ionic silver, and our initial products contain silver dihydrogen citrate, or SDC. SDC is a broad-spectrum, non-toxic&#13;antimicrobial agent, which offers 24-hour residual protection and formulates well with other compounds. We sell various configurations&#13;and dilutions of SDC direct to customers and through distributors. We currently offer PURE&lt;sup&gt;&amp;#174;&lt;/sup&gt; Hard Surface as a food&#13;contact surface sanitizer and disinfectant to restaurant chains, food processors and food transportation companies. We also offer&#13;PURE Control&lt;sup&gt;&amp;#174;&lt;/sup&gt; as a direct food contact processing aid.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Contract terms for unit price, quantity, shipping&#13;and payment are governed by sales agreements and purchase orders which we consider to be a customer&amp;#8217;s contract in all cases.&#13;The unit price is considered the observable stand-alone selling price for the arrangements. Any promotional or sales discounts&#13;are applied evenly to the units sold for purposes of calculating standalone selling price.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Product sales generally consist of a single&#13;performance obligation that we satisfy at a point in time. We recognize product revenue when the following events have occurred:&#13;(a) we have transferred physical possession of the products, (b) we have a present right to payment, (c) the customer has legal&#13;title to the products, and (d) the customer bears significant risks and rewards of ownership of the products.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our direct customer and distributor sales are&#13;invoiced based on received purchase orders. Our payment terms on invoiced direct customer and distributor sales range between 30&#13;and 90 days after we satisfy our performance obligation. The majority of our customers are on 30 day payment terms. We currently&#13;offer no right of return on invoiced sales and maintain no allowance for sales returns.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Shipping and handling are treated as activities&#13;to fulfill promises to customers and any amounts billed to a customer, if applicable, represent revenues earned for the goods provided.&#13;Costs related to such shipping and handling billings are classified as cost of sales.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We do not have significant categories of revenue&#13;that may impact how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Variable Consideration&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We record revenue from customers in an amount&#13;that reflects the transaction price we expect to be entitled to after transferring control of those goods or services. From time&#13;to time, we offer sales promotions on our products such as discounts. Variable consideration is estimated at contract inception&#13;only to the extent that it is probable that a significant reversal of revenue will not occur.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Use of Estimates&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The preparation of consolidated financial statements&#13;in conformity with accounting principles generally accepted in the United States of America, or GAAP, requires management to make&#13;estimates and assumptions that affect the amounts reported in the consolidated financial statements, and the disclosures made in&#13;the accompanying notes to the consolidated financial statements. Actual results could differ materially from those estimates. Those&#13;estimates and assumptions include estimates for reserves of uncollectible accounts, inventory obsolescence, depreciable lives of&#13;property and equipment, analysis of impairments of recorded long-term tangible and intangible assets, realization of deferred tax&#13;assets, accruals for potential liabilities and assumptions made in valuing stock instruments issued for services.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Cash and Cash Equivalents&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Cash and cash equivalents consist of cash and&#13;highly liquid investments with original maturities from the purchase date of three months or less.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Restricted Cash&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company is required to maintain $75,000&#13;in a restricted certificate of deposit account in order to fully collateralize four revolving credit card accounts.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Accounts Receivable&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Trade accounts receivable are recorded net&#13;of allowances for doubtful accounts. We evaluate the collectability of our trade accounts receivable based on a number of factors.&#13;In circumstances where we becomes aware of a specific customer&amp;#8217;s inability to meet its financial obligations to the Company,&#13;a specific reserve for bad debts is estimated and recorded, which reduces the recognized receivable to the estimated amount the&#13;Company believes will ultimately be collected. In addition to specific customer identification of potential bad debts, bad debt&#13;charges are recorded based on our historical losses and an overall assessment of past due trade accounts receivable outstanding.&#13;The allowance for doubtful accounts was zero at July 31, 2020 and 2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Inventories&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Inventories are stated at the lower of cost&#13;or net realizable value, and net of a valuation allowance for potential excess or obsolete material. Cost is determined using the&#13;average cost method. We regularly review our inventory quantities on hand and record a provision for excess and obsolete inventory&#13;based primarily on our estimated forecast of product demand and our ability to sell the product(s) concerned. Demand for our products&#13;can fluctuate significantly. Factors that could affect demand for our products include unanticipated changes in consumer preferences,&#13;general market conditions or other factors, which may result in cancellations of advance orders or a reduction in the rate of reorders&#13;placed by customers. Additionally, our management&amp;#8217;s estimates of future product demand may be inaccurate, which could result&#13;in an understated or overstated provision required for excess and obsolete inventory. At July 31, 2020 and 2019, management determined&#13;that a reserve for inventory obsolescence was not required.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Property, Plant and Equipment&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Property, plant and equipment is stated at&#13;cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of&#13;the assets. The estimated useful lives of our property, plant, and equipment range from three to ten years. Capitalized costs associated&#13;with leasehold improvements are depreciated over the lesser of the useful life of the asset or the remaining life of the lease.&#13;Depreciation is generally included in selling, general and administrative expense. Depreciation related to manufacturing is systematically&#13;allocated to inventory produced, and expensed through cost of goods sold at the time inventory is sold.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Management assesses the carrying value of property&#13;and equipment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. If there is&#13;indication of impairment, management prepares an estimate of future cash flows expected to result from the use of the asset and&#13;its eventual disposition. If these cash flows are less than the carrying amount of the asset, an impairment loss is recognized&#13;to write down the asset to its estimated fair value. For the years ended July 31, 2020 and 2019, Company Management determined&#13;there were no indicators of impairment of its property and equipment.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Patents&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We have filed a number of patent applications&#13;with the United States Patent and Trademark Office and in foreign countries. Certain legal and related costs incurred in connection&#13;with pending patent applications have been capitalized. Costs related to successful patent applications are amortized over the&#13;lesser of the remaining useful life of the related technology or the remaining patent life, commencing on the date the patent is&#13;issued. Capitalized costs related to patent applications are expensed in the period in which a determination is made not to pursue&#13;such applications.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Impairment of Long-Lived Assets&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In accordance with GAAP, if indicators of impairment&#13;exist, we assess the recoverability of the affected long-lived assets by determining whether the carrying value of such assets&#13;can be recovered through undiscounted future operating cash flows. If impairment is indicated, we measure the amount of such impairment&#13;by comparing the carrying value of the asset to the fair value of the asset and we record the impairment as a reduction in the&#13;carrying value of the related asset and a charge to operating results. Estimating the undiscounted future cash flows associated&#13;with long-lived assets requires judgment, and assumptions could differ materially from actual results. There were no patent impairments&#13;during the years ended July 31, 2020 or 2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Shipping and Handling Costs&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Shipping and handling costs incurred by us&#13;for product shipments are included in cost of goods sold.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Research and Development Costs&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Research and development costs are expensed&#13;as incurred.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Share-Based Compensation&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We periodically issue stock options and restricted&#13;stock awards to employees and non-employees in non-capital raising transactions for services and for financing costs. We account&#13;for such grants issued and vesting to employees based on ASC 718, whereby the value of the award is measured on the date of grant&#13;and recognized as compensation expense on the straight-line basis over the vesting period. In prior periods, we accounted for stock&#13;option and warrant grants issued and vesting to non-employees in accordance with the authoritative guidance of the FASB whereby&#13;the value of the stock compensation is based upon the measurement date as determined at either a) the date at which a performance&#13;commitment is reached, or b) at the date at which the necessary performance to earn the equity instruments is complete. On August&#13;1, 2019, the Company adopted Accounting Standards Update (ASU) 2018-07 which expands the scope of Topic 718 to include share-based&#13;payment transactions for acquiring goods and services from nonemployees. The Company recognizes the fair value of stock-based compensation&#13;within its Statements of Operations with classification depending on the nature of the services rendered. The adoption of ASU 2018-07&#13;had no cumulative effect on previously reported amounts.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We estimate the fair value of share-based payment&#13;awards at the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model requires the&#13;input of subjective assumptions, including price volatility of the underlying stock, risk-free interest rate, dividend yield, and&#13;expected life of the option. Share-based compensation expense is based on awards ultimately expected to vest, and therefore is&#13;reduced by expected forfeitures.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Fair Value Measurements&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company determines the fair value of its&#13;assets and liabilities based on the exchange price in U.S. dollars that would be received for an asset or paid to transfer a liability&#13;(an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market&#13;participants on the measurement date. Valuation techniques used to measure fair value maximize the use of observable inputs and&#13;minimize the use of unobservable inputs. The Company uses a fair value hierarchy with three levels of inputs, of which the first&#13;two are considered observable and the last unobservable, to measure fair value:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="width: 24px; text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 24px; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Level 1 &amp;#8212; Quoted prices in active markets for identical assets or liabilities.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Level 2 &amp;#8212; Inputs, other than Level 1, that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Level 3 &amp;#8212; Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The carrying amounts of financial instruments&#13;such as cash, accounts receivable, inventories, accounts payable and accrued liabilities, approximate the related fair values due&#13;to the short-term maturities of these instruments.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Concentrations&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Gross sales&lt;/i&gt;. For the year ended July&#13;31, 2020, three individual customers accounted for 16%, 13% and 11% of our net product sales. No other individual customer accounted&#13;for 10% or more of our net product sales. The geographic breakdown of net product sales was as follows: 98% U.S. and 2% foreign.&#13;For the year ended July 31, 2019, one individual customer accounted for 15%, and two individual customers accounted for 11% of&#13;our net product sales. No other individual customer accounted for 10% or more of our net product sales. All of our net product&#13;sales occurred in the United States.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Accounts receivable. &lt;/i&gt;As of July 31,&#13;2020, we had accounts receivable from three customers that comprised 21%, 16% and 11% of total accounts receivable, respectively.&#13;As of July 31, 2019, we had accounts receivable from two customers that comprised of 36%, and 20% of total accounts receivable,&#13;respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Purchases. &lt;/i&gt;For the fiscal year ended&#13;July 31, 2020, one vendor accounted for 54% of our purchases. For the fiscal year ended July 31, 2019, one vendor accounted for&#13;18% of our purchases.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Accounts payable.&lt;/i&gt; As of July 31, 2020,&#13;one vendor accounted for 66% of the total trade accounts payable. As of July 31, 2019, two vendors accounted for 14% and 13% of&#13;the total trade accounts payable, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Income Taxes&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We recognize deferred tax assets and liabilities&#13;for temporary differences between the tax basis of assets and liabilities and the amounts at which they are carried in the financial&#13;statements based upon the enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation&#13;allowance is established to reduce deferred tax assets to the amount expected to be realized.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Income (Loss) Per Share&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Basic earnings (loss) per share is computed&#13;by dividing net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding during&#13;the period. Diluted earnings per share is computed by dividing net income attributable to common stockholders by the sum of the&#13;weighted-average number of common shares outstanding during the period and the weighted-average number of dilutive common share&#13;equivalents outstanding during the period, using the treasury stock method. Dilutive common share equivalents are comprised of&#13;in-the-money stock options and restricted stock units, based on the average stock price for each period using the treasury stock&#13;method. For the fiscal year ended July 31, 2020, the incremental dilutive common share equivalents were 2,402,335. Since we incurred&#13;a loss for the fiscal year ended July 31, 2019 the number of shares issuable upon the exercise of stock options, the vesting of&#13;restricted stock units, and the exercise of warrants, none of which are included in the computation of basic net loss per common&#13;share, was 9,736,772.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Segments&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We operate in one segment for the manufacture&#13;and distribution of our products. In accordance with the &amp;#8220;Segment Reporting&amp;#8221; Topic of the ASC, our chief operating&#13;decision maker has been identified as the Chief Executive Officer and President, who reviews operating results to make decisions&#13;about allocating resources and assessing performance for the entire Company. Existing guidance, which is based on a management&#13;approach to segment reporting, establishes requirements to report selected segment information quarterly and to report annually&#13;entity-wide disclosures about products and services, major customers, and the countries in which the entity holds material assets&#13;and reports revenue. All material operating units qualify for aggregation under &amp;#8220;Segment Reporting&amp;#8221; due to their similar&#13;customer base and similarities in: economic characteristics; nature of products and services; and procurement, manufacturing and&#13;distribution processes. Since the Company operates in one segment, all financial information required by &amp;#8220;Segment Reporting&amp;#8221;&#13;can be found in the accompanying financial statements.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Reclassification&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;For the fiscal year ended July 31, 2019, share-based&#13;compensation expense of $2,449,000 has now been included in selling, general and administrative expense. This reclassification&#13;did not have an impact on our results of operations or financial condition for the fiscal year ended July 31, 2020 and 2019.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Recent Accounting Pronouncements&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In June 2016, the FASB issued ASU No. 2016-13,&#13;Credit Losses - Measurement of Credit Losses on Financial Instruments (&amp;#8220;ASC 326&amp;#8221;). The standard significantly changes&#13;how entities will measure credit losses for most financial assets, including accounts and notes receivables. The standard will&#13;replace today&amp;#8217;s &amp;#8220;incurred loss&amp;#8221; approach with an &amp;#8220;expected loss&amp;#8221; model, under which companies will&#13;recognize allowances based on expected rather than incurred losses. Entities will apply the standard&amp;#8217;s provisions as a cumulative-effect&#13;adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. As small&#13;business filer, the standard will be effective for us for interim and annual reporting periods beginning after December 15, 2022.&#13;The Company is currently assessing the impact of adopting this standard on the Company&amp;#8217;s financial statements and related&#13;disclosures.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In August 2020, the FASB issued ASU No. 2020-06&#13;(&amp;#8220;ASU 2020-06&amp;#8221;)&amp;#160;&amp;#8220;Debt&amp;#8212;Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and&#13;Hedging&amp;#8212;Contracts in Entity&amp;#8217;s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in&#13;an Entity&amp;#8217;s Own Equity.&amp;#8221;&amp;#160;ASU 2020-06 will simplify the accounting for convertible instruments by reducing the&#13;number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models will&#13;result in fewer embedded conversion features being separately recognized from the host contract as compared with current GAAP.&#13;Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are&#13;not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope&#13;exception from derivative accounting and (2) convertible debt instruments issued with substantial premiums for which the premiums&#13;are recorded as paid-in capital. ASU 2020-06 also amends the guidance for the derivatives scope exception for contracts in an entity&amp;#8217;s&#13;own equity to reduce form-over-substance-based accounting conclusions. ASU 2020-06 will be effective January 1, 2024, for the Company.&#13;Early adoption is permitted, but no earlier than January 1, 2021, including interim periods within that year. Management is currently&#13;evaluating the effect of the adoption of ASU 2020-06 on the consolidated financial statements, but currently does not believe ASU&#13;2020-06 will have a significant impact on the Company&amp;#8217;s accounting.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Recent accounting pronouncements issued by&#13;the FASB, including its Emerging Issues Task Force, the American Institute of Certified Public Accountants, and the Securities&#13;and Exchange Commission did not or are not believed by management to have a material impact on the Company&amp;#8217;s present or&#13;future consolidated financial statement presentation or disclosures.&lt;/p&gt;</us-gaap:SignificantAccountingPoliciesTextBlock>
    <us-gaap:SupplementalBalanceSheetDisclosuresTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;3. Balance Sheet Details&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Inventories consist of the following:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Raw materials&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;17,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;30,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Finished goods&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;530,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;147,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;547,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;177,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Property, plant, and equipment consist of the&#13;following:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Computers and equipment&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;819,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,001,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Furniture and fixtures&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;21,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;819,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,022,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Less accumulated depreciation&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(503,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(660,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;316,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;362,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Depreciation expense for the years ended July&#13;31, 2020 and 2019 was $104,000 and $106,000, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Patents consist of the following:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Patents&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3,504,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3,504,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Less accumulated amortization&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(3,063,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(2,975,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;441,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;529,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Patent amortization expense for the years ended&#13;July 31, 2020 and 2019 was $88,000 and $135,000, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;At July 31, 2020, future patent amortization&#13;expense is expected to be as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 82%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2021&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 15%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;76,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2022&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;48,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2023&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;42,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2024&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;42,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2025&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;42,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Thereafter&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;191,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;441,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:SupplementalBalanceSheetDisclosuresTextBlock>
    <us-gaap:CommitmentsAndContingenciesDisclosureTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;4. Commitments and Contingencies&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;COVID-19&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The COVID-19 pandemic has led to severe disruptions&#13;in general economic activities, as businesses and federal, state, and local governments take increasingly broad actions to mitigate&#13;this public health crisis. While we have experienced some delays related to final third-party validation of certain of our products&#13;and product rollouts by customers using PURE Control, we have not experienced a material disruption to our business. In addition,&#13;we have benefited from increased demand from our customers for our PURE Hard Surface product due to a focus on surface disinfecting&#13;in response to attempting to prevent COVID-19 transmission. We cannot assure you that such increased demand will continue. Further,&#13;on a go-forward basis, we cannot guarantee the overall economic conditions will not affect our business, as these conditions may&#13;significantly negatively impact all aspects of our business. Our business is dependent on the continued health and productivity&#13;of our employees, including our sales staff and corporate management team.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Additionally, our liquidity could be negatively&#13;impacted if these conditions continue for a significant period of time and we may be required to pursue additional sources of financing&#13;to obtain working capital, maintain appropriate inventory levels, and meet our financial obligations. Currently, capital and credit&#13;markets have been disrupted by the crisis and our ability to obtain any required financing is not guaranteed and largely dependent&#13;upon evolving market conditions and other factors. Depending on the continued impact of the crisis, further actions may be required&#13;to improve our cash position and capital structure.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The extent to which the COVID-19 pandemic ultimately&#13;impacts our business, sales, results of operations and financial condition will depend on future developments, which are highly&#13;uncertain and cannot be predicted, including, but not limited to, the duration and spread of the outbreak, its severity, the actions&#13;to contain the virus or treat its impact, and how quickly and to what extent normal economic and operating conditions resume and,&#13;more specifically, the effect it has on our customers and suppliers. Even after the COVID-19 pandemic has subsided, we may experience&#13;significant impacts to our business as a result of its global economic impact, including any economic downturn or recession that&#13;has occurred or may occur in the future.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Legal&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;From time to time, we could become involved&#13;in disputes and various litigation matters that arise in the normal course of business. Lawsuits against us or our officers or&#13;directors by employees, former employees, stockholders, partners, customers, or others, or actions taken by regulatory authorities,&#13;could be very costly and substantially disrupt our business. Such lawsuits and actions are not uncommon, and we may not be able&#13;to resolve such disputes or actions on terms favorable to us, and there may not be sufficient capital resources available to defend&#13;such actions effectively, or at all. As of July 31, 2020, there were no material lawsuits against the Company.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Operating Leases&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On July 29, 2019, we entered into a Sublease&#13;Agreement (the &amp;#8220;Sublease&amp;#8221;) with SwabPlus L.P. (&amp;#8220;SwabPlus&amp;#8221;), effective July 25, 2019, pursuant to which&#13;we will sublease certain office and industrial space for our corporate headquarters. The premises are located in Rancho Cucamonga,&#13;California. Pursuant to the terms of the Sublease, the Company will pay SwabPlus rent of approximately $2,333 per month, plus additional&#13;payments for real property taxes, maintenance and repair and related expenses. We terminated our prior lease in El Cajon, California&#13;and transitioned to the new premises in September 2019. Rent expense, including common area maintenance, was $37,000 and $111,000&#13;for the years ended July 31, 2020 and 2019, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Tom Y. Lee, the Company&amp;#8217;s Chief Executive&#13;Officer, Chairman of the Board and President, also serves as chairman of the board of directors and chief executive officer of&#13;SwabPlus. Mr. Lee also serves as president of Hermosa Property, Inc., the landlord of the premises subject to the Sublease. The&#13;Sublease was considered by the Company in accordance with the Company&amp;#8217;s Related Party Transaction and Procedures Policy,&#13;and approved by the disinterested members of the Board. The total payments to SwabPlus during the year ended July 31, 2020 was&#13;$39,000.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Sublease expires December 2020. Future&#13;annual lease payment for our primary facility as of July 31, 2020 is $12,000.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Manufacturing&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Effective June 9, 2019, we entered into a five-year&#13;manufacturing supply agreement with Intercon Chemical Company (ICC) with a three-year renewal term option (the &amp;#8220;Manufacturing&#13;Supply Agreement&amp;#8221;). The agreement consists of manufacturing, packaging, and distribution of PURE&amp;#8217;s SDC-based products&#13;and contains no mandatory purchase commitment levels. The Manufacturing Supply Agreement provides:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%"&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="width: 24px"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 24px"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;ICC licenses PURE&amp;#8217;s patents and technology know-how for the non-exclusive manufacture of PURE&amp;#8217;s SDC-based products.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;ICC will invest in plant improvements to allow for expanded SDC production.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;ICC&amp;#8217;s R&amp;#38;D team will collaborate on SDC product line development.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Manufacturing Supply Agreement may be terminated&#13;by mutual written consent, or by either party upon the material breach of the terms of the agreement by the other party.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Silver is the primary active ingredient in&#13;SDC and is a readily available commodity. The other active and inactive ingredients in our products are readily available from&#13;multiple sources.&lt;/p&gt;</us-gaap:CommitmentsAndContingenciesDisclosureTextBlock>
    <us-gaap:StockholdersEquityNoteDisclosureTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;5. Stockholders&amp;#8217; Equity&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Preferred Stock&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;As of July 31, 2020, the Company&amp;#8217;s Board&#13;of Directors is authorized to issue 5,000,000 shares of preferred stock with a par value of $0.01 per share, in one or more series.&#13;As of July 31, 2020 and July 31, 2019, there were no shares of preferred stock issued and outstanding.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Common Stock&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;As of July 31, 2020, 100,000,000 shares of&#13;common stock with a par value of $0.01 per share are authorized for issuance.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Private Placement Financing &amp;#8211; Fiscal&#13;Year 2020&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On October 2, 2019, we entered into and completed&#13;a closing (the &amp;#8220;Closing&amp;#8221;) of a private placement financing to accredited investors. We raised net proceeds of $830,000&#13;in the Closing of an aggregate of 2,862,068 shares of our common stock at a purchase price of $0.29 per share, the closing sales&#13;price of our common stock on the date prior to the Closing. The Shares issued in the private placement financing were issued pursuant&#13;to a securities purchase agreement entered into with the investors. Tom Y. Lee and Dale Okuno, each of whom are accredited investors&#13;and members of the Company&amp;#8217;s Board of Directors invested $290,000 and $250,000, respectively, in the private placement financing.&#13;Mr. Lee also serves as the Company&amp;#8217;s President and Chief Executive Officer.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The net proceeds to us from the Closing, after&#13;deducting the forgoing fees and other offering expenses, were $830,000.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On March 9, 2020, we entered into a Securities&#13;Purchase Agreement (the &amp;#8220;Purchase Agreement&amp;#8221;) with various accredited investors with respect to a private placement&#13;financing (the &amp;#8220;Private Placement&amp;#8221;) and simultaneously completed the closing (the &amp;#8220;Closing&amp;#8221;) of the Private&#13;Placement. We raised net proceeds of approximately $2,000,000 in the Private Placement for an aggregate of 6,896,551 shares of&#13;our common stock (the &amp;#8220;Shares&amp;#8221;) at a purchase price of $0.29 per share. The per share purchase price was approved by&#13;our Board of Directors on February 24, 2020 and represents a 20% discount to the closing price of the Company&amp;#8217;s common stock&#13;on that date. Tom Y. Lee, Dale Okuno and Ivan Chen, each of whom are accredited investors and members of the Company&amp;#8217;s Board&#13;of Directors, invested $650,500, $450,000 and $52,000, respectively, in the Private Placement. Mr. Lee also serves as the Company&amp;#8217;s&#13;President and Chief Executive Officer.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The net proceeds to us from the Private Placement,&#13;after deducting estimated fees and other offering expenses, were approximately $2,000,000.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The issuance and sale of the Shares was not&#13;registered under the Securities Act of 1933, as amended (the &amp;#8220;Securities Act&amp;#8221;), and these Shares may not be offered&#13;or sold in the United States absent registration under or exemption from the Securities Act and any applicable state securities&#13;laws. The Shares were issued and sold in reliance upon an exemption from registration afforded by Section 4(a)(2) of the Securities&#13;Act and Rule 506 of Regulation D promulgated under the Securities Act. The Investors represented to the Company that each was an&#13;&amp;#8220;accredited investor&amp;#8221; within the meaning of Rule 501 of Regulation D under the Securities Act, and that each was receiving&#13;the Shares for investment for its own account and without a view to distribute them.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Private Placement Financing &amp;#8211; Fiscal&#13;Year 2019&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On August 16, 2018, we completed a Closing&#13;of a private placement financing to accredited investors. We raised approximately $1.5 million in the Closing and issued an aggregate&#13;of 3,333,964 shares of our common stock at a purchase price of $0.45 per share, including the conversion of approximately $0.5&#13;million held in the form of a promissory note as of July 31, 2018 to Tom Y. Lee, a member of the Company&amp;#8217;s Board of Directors&#13;and our largest stockholder. The shares issued in the private placement financing were issued pursuant to a securities purchase&#13;agreement entered into with the investors. Mr. Tom Y. Lee, a member of the Company&amp;#8217;s Board of Directors invested approximately&#13;$1.0 million through his affiliates, including approximately $0.5 million of cash and the cancellation of existing indebtedness&#13;in the amount of approximately $0.5 million that was held in the form of a promissory note payable as of July 31, 2018.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During May, June and July of 2019, we completed&#13;three closings (the &amp;#8220;Closings&amp;#8221;) of a private placement financings to accredited investors. We raised net proceeds of&#13;$716,000 in the Closings and issued an aggregate of 2,468,963 shares of our common stock at a purchase price of $0.29 per share.&#13;The shares issued in the private placement financing were issued pursuant to a securities purchase agreement entered into with&#13;the investors. Messrs. Dale Okuno and Ivan Chen, each of whom are accredited investors and members of the Company&amp;#8217;s Board&#13;of Directors invested $250,000 and $35,000, respectively, in the private placement financings.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The issuance and sale of the shares was not&#13;registered under the Securities Act of 1933, as amended (the &amp;#8220;Securities Act&amp;#8221;), and these shares may not be offered&#13;or sold in the United States absent registration under or exemption from the Securities Act and any applicable state securities&#13;laws. The shares were issued and sold in reliance upon an exemption from registration afforded by Section 4(a)(2) of the Securities&#13;Act and Rule 506 of Regulation D promulgated under the Securities Act. The Investors represented to the Company that each was an&#13;&amp;#8220;accredited investor&amp;#8221; within the meaning of Rule 501 of Regulation D under the Securities Act, and that each was receiving&#13;the shares for investment for its own account and without a view to distribute them.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Other Activity&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During the three months ended October 31, 2017,&#13;we entered into a two-year service agreement for business development services. In accordance with the agreement we issued 50,000&#13;shares of common stock, with a value of $51,000. The value was capitalized to prepaid expense and is being amortized over the term&#13;of the agreement. During the fiscal year ended July 31, 2020 and 2019, we recognized $4,000 and $25,000 of expense related to these&#13;services, respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Warrant Financing &amp;#8211; Fiscal Year&#13;2019&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On February 19, 2019, we entered into warrants&#13;amendments (each a &amp;#8220;Warrant Amendment&amp;#8221;, and together, the &amp;#8220;Warrant Amendments&amp;#8221;) with three holders of warrants&#13;to purchase the Company&amp;#8217;s common stock issued in August 2014 (the &amp;#8220;2014 Warrants&amp;#8221;). The Warrant Amendments provided&#13;(i) for a reduction in the exercise price from $0.75 to $0.35 and (ii) that 2014 Warrants would expire unless otherwise exercised&#13;on the date of the Warrant Amendments. In connection with the execution of the Warrant Amendments, on February 19, 2019, the holders&#13;exercised the 2014 Warrants to purchase 2,399,999 shares of common stock for an aggregate exercise price of $840,000.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Tom Lee, the Company&amp;#8217;s Chairman of the&#13;Board, and beneficial holder of a 2014 Warrant to purchase 2,133,333 shares of Common Stock, entered into a Warrant Amendment and&#13;exercised his 2014 Warrant for an aggregate exercise price of $746,666. Additionally, Dale Okuno, a member of the Company&amp;#8217;s&#13;Board of Directors, and beneficial holder of a 2014 Warrant to purchase 213,333 shares of Common Stock, entered into a Warrant&#13;Amendment and exercised his 2014 Warrant for an aggregate exercise price of $74,666.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Due to the reduction in exercise price for&#13;the 2014 Warrants issued in connection with the Warrant Amendment, we determined it was appropriate to record $960,000 of expense&#13;in the 2019 condensed consolidated statement of operations for the inducement to exercise the 2014 Warrants.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A summary of our warrant activity and related&#13;data is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 82%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2018&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 15%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,861,096&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Issued&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(2,399,999&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Expired/Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="padding-bottom: 1.5pt"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2019&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;461,097&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Issued&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Expired/Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(133,332&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2020&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;327,765&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The following table summarizes information&#13;related to warrants outstanding at July 31, 2020:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Expiration&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Exercise&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Date&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;12/01/21&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.25&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;58,824&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;12/01/21&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.28&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;117,647&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;01/23/22&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.25&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;117,647&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;01/23/22&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.28&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;33,647&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;327,765&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:StockholdersEquityNoteDisclosureTextBlock>
    <us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;6. Share-Based Compensation&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Restricted Stock Units&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company issues restricted stock unit awards&#13;(&amp;#8220;RSUs&amp;#8221;) to key management and as compensation for services to consultants and others. The RSUs typically vest over&#13;a one to three-year period and carry a ten-year term. Each RSU represents the right to receive one share of common stock, issuable&#13;at the time the RSU subsequently settles, as set forth in the Restricted Stock Unit Agreement. The Company determines that fair&#13;value of those awards at the date of grant, and amortizes those awards as an expense over the vesting period of the award. The&#13;shares earned under the grant are usually issued when the award settles at the end of the term.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On October 4, 2018, the Board of Directors&#13;appointed Tom Myers as the Company&amp;#8217;s Chief Operating Officer. In connection with Mr. Myers appointment, the Board agreed&#13;to grant him 500,000 RSUs upon the achievement by the Company of profitability for a fiscal quarter, after which such RSUs shall&#13;vest annually over the following three years. In May 2020, the 500,000 RSUs were formally granted to Mr. Myers due to the Company&amp;#8217;s&#13;profitable April 30, 2020 fiscal quarter.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Of the 2,012,500 RSUs outstanding, we currently&#13;expect 500,000 to vest.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During the fiscal year ended July 31, 2020,&#13;the Company recognized $70,000 of compensation cost relating to the shares vesting during the period. In addition, the Company&#13;accelerated the vesting of 400,000 shares of stock issued to Henry R. Lambert with a remaining value of $162,000 upon his retirement&#13;during the period. In total, the Company recognized $232,000 from the vesting of these restricted stock units. For fiscal year&#13;ended July 31, 2019 share-based compensation expense for RSUs was $1,062,000, of which $489,000 was due to the accelerated vesting&#13;of RSU&amp;#8217;s held by Dave Pfanzelter, the former Chairman of our Board. Mr. Pfanzelter retired from our Board in August 2018.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During the fiscal year ended July 31, 2020,&#13;400,000 shares were settled and delivered to Mr. Lambert upon his retirement.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: 0.5in"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Of the 2,012,500 RSUs outstanding as of July&#13;31, 2020, 1,512,500 RSUs are vested and issuable. These RSUs are issued upon settlement date which is defined as &amp;#8220;for each&#13;Vested Unit, the earliest of (i) the ten-year anniversary of the Grant Date; (ii) sixty days after the date the Grantee&amp;#8217;s&#13;Service ceases for any reason and such cessation constitutes a &amp;#8220;separation from service&amp;#8221; within the meaning of Section&#13;409A of the Code; (iii) the date of Grantee&amp;#8217;s death or (iv) the date of a Change in Control that constitutes a &amp;#8220;change&#13;in control event&amp;#8221; within the meaning of Section 409A of the Code&amp;#8221;.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;As of July 31, 2020, there was $227,000 of&#13;unrecognized non-cash compensation cost related to the remaining RSUs we expect to vest, which will be recognized over a weighted&#13;average period of 2.75 years.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A summary of our restricted stock unit activity&#13;and related data is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 82%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2018&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 15%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,525,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;725,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Vested&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(206,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Forfeited&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(131,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2019&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,912,500&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;500,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Vested&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(400,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Forfeited&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2020&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,012,500&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Stock Option Plans&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;2007 Equity Incentive Plan&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In February 2016, we amended and restated our&#13;2007 Equity Incentive Plan, the (&amp;#8220;2007 Plan&amp;#8221;), to, among other changes, increase the number of shares of common stock&#13;issuable under the 2007 Plan by 4,000,000 shares and extend the term of the 2007 Plan until February 4, 2026. The 2007 Plan provides&#13;for the grant of incentive and non-qualified stock options, as well as other share-based payment awards, to our employees, directors,&#13;consultants and advisors. These awards have up to a 10-year contractual life and are subject to various vesting periods, as determined&#13;by the Compensation Committee of the Board of Directors. As of July 31, 2020, there were approximately 33,000 shares available&#13;for issuance under the 2007 Plan.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;2017 Equity Incentive Plan&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our shareholders approved our 2017 Equity Incentive&#13;Plan (the &amp;#8220;2017 Plan&amp;#8221;) in January 2018, which has a share reserve of 5,000,000 shares of common stock that were registered&#13;under a Form S-8 filed with the SEC in February 2018. The 2017 Plan provides for the grant of incentive and non-qualified stock&#13;options, as well as other share-based payment awards, to our employees, directors, consultants and advisors. These awards have&#13;up to a 10-year contractual life and are subject to various vesting periods, as determined by the Compensation Committee of the&#13;Board of Directors. As of July 31, 2020, there were approximately 181,000 shares available for issuance under the 2017 Plan.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Stock Option Activity&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During the fiscal year ended July 31, 2020,&#13;the Compensation Committee of the Board of Directors authorized the issuance of 2,550,000 stock options to our employees, officers,&#13;directors and consultants with a fair value of $946,000 as determined by the Black Scholes option pricing model. The vesting terms&#13;of the options vary between one and two years and carry a ten year term.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A summary of our stock option activity for&#13;the fiscal years ended July 31, 2020 and 2019 is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Weighted-&lt;br /&gt;&#13;Average&lt;br /&gt;&#13;Exercise Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Aggregate&lt;br /&gt;&#13;Intrinsic&lt;br /&gt;&#13;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 55%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2018&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 12%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,626,093&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 12%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.09&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 12%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;300,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.52&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(562,968&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.47&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2019&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,363,125&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.04&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,550,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.58&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4,300&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(440,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.82&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(40,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;11.41&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2020&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9,432,875&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.88&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5,255,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="10" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="10" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercisable&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Range of Exercise Prices&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Number of Shares Outstanding&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Remaining Contractual Life &lt;br /&gt;&#13;(in years)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Exercise Price&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Number of Shares Exercisable&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Remaining Contractual Life &lt;br /&gt;&#13;(in years)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Exercise Price&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 46%; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$0.25 to $0.50&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,440,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9.29&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.34&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;541,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9.19&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.34&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$0.51 to $1.50&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,973,500&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.59&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.97&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;6,505,167&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3.63&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.99&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$1.51 to $6.72&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;19,375&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.95&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;6.72&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;19,375&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.95&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;6.72&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9,432,875&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5.30&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.88&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,065,792&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.05&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.96&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The weighted average expected term of options&#13;outstanding at July 31, 2020 was 5.30 years.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;For the fiscal year ended July 31, 2020 share-based&#13;compensation expense for stock options vesting during the period was $555,000. For the fiscal year ended July 31, 2019 share-based&#13;compensation expense for stock options vesting during the period was $1,387,000, of which $739,000 was due the accelerated vesting&#13;of stock options held by Dave Pfanzelter, the former Chairman of our Board. Mr. Pfanzelter retired from our Board in August 2018.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;At July 31, 2020, options to purchase 7,065,792&#13;shares of common stock were exercisable. These options had a weighted-average exercise price of $0.88 and a weighted average remaining&#13;contractual term of 4.05 years. The weighted average grant date fair value for options granted during the fiscal year ended July&#13;31, 2020 was $0.40. The total unrecognized compensation cost related to unvested stock option grants as of July 31, 2020 was approximately&#13;$731,000 and the weighted average period over which these grants are expected to vest is 1.20 years.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During the fiscal year ended July 31, 2020,&#13;there was a net exercise on 440,000 stock options which resulted in the issuance of 181,998 shares of our common stock. As these&#13;options were net exercised, as permitted under the respective option agreements, we did not receive any cash proceeds.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We use the Black-Scholes valuation model to&#13;calculate the fair value of stock options. Share-based compensation expense is recognized over the vesting period using the straight-line&#13;method. The fair value of stock options was estimated at the grant date using the following weighted average assumptions:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&lt;b&gt;For the years ended&lt;/b&gt;&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Volatility&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;83.15&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;75.67&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Risk-free interest rate&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.89&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2.63&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Dividend yield&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.0&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.0&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Expected life&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5.45 years&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.80 years&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Volatility is the measure by which our stock&#13;price is expected to fluctuate during the expected term of an option. Volatility is derived from the historical daily change in&#13;the market price of our common stock, as we believe that historical volatility is the best indicator of future volatility.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The risk-free interest rates used in the Black-Scholes&#13;calculations are based on the prevailing U.S. Treasury yield as determined by the U.S. Federal Reserve.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We have never paid dividends on our common&#13;stock and do not anticipate paying dividends on our common stock in the foreseeable future. Accordingly, we have assumed no dividend&#13;yield for purposes of estimating the fair value of our share-based compensation.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The weighted average expected life of options&#13;was estimated using the average of the contractual term and the weighted average vesting term of the options. Certain options&#13;granted to consultants are subject to variable accounting treatment and are required to be revalued until vested.&lt;/p&gt;</us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock>
    <us-gaap:RelatedPartyTransactionsDisclosureTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;7. Related Party Transactions&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On June 28, 2018, we raised $500,000 to support&#13;our continued operations by issuing a one-year promissory note to Tom Y. Lee, a member of the Company&amp;#8217;s Board of Directors&#13;and our largest stockholder. The note accrued interest at 6.5% per annum, compounded annually. On August 16, 2018, $500,000 of&#13;principal and approximately $4,000 of accrued interest was converted into 1,120,633 shares of common stock (See Note 5 to these&#13;consolidated financial statements).&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;On July 29, 2019, we entered into a Sublease&#13;Agreement (the &amp;#8220;Sublease&amp;#8221;) with SwabPlus L.P. (&amp;#8220;SwabPlus&amp;#8221;), effective July 25, 2019, pursuant to which&#13;we will sublease certain office and industrial space for our corporate headquarters. The premises are located in Rancho Cucamonga,&#13;California. Pursuant to the terms of the Sublease, the Company will pay SwabPlus rent of approximately $2,333 per month, plus additional&#13;payments for real property taxes, maintenance and repair and related expenses (See Note 4 to these consolidated financial statements).&#13;During the year ended July 31, 2020, $39,000 was paid to SwabPlus.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;During the fiscal year ended July 31, 2020,&#13;we sold $124,000 of product to Harmony Bioscience, Inc. PURE Chairman and CEO Tom Y. Lee is an affiliate of Harmony Bioscience.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;As of July 31, 2020 and July 31, 2019, accounts&#13;payable included $60,000 in board fees due to officers and directors, respectively.&lt;/p&gt;</us-gaap:RelatedPartyTransactionsDisclosureTextBlock>
    <us-gaap:ConcentrationRiskDisclosureTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;8. Sales Concentration&lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Net product sales were $6,917,000 and $1,909,000&#13;for the years ended July 31, 2020 and 2019, respectively. For the year ended July 31, 2020, three individual customers accounted&#13;for 16%, 13% and 11% of our net product sales. No other individual customer accounted for 10% or more of our net product sales.&#13;For the year ended July 31, 2019, one individual customer accounted for 15%, and two individual customers accounted for 11% of&#13;our net product sales. No other individual customer accounted for 10% or more of our net product sales.&lt;/p&gt;</us-gaap:ConcentrationRiskDisclosureTextBlock>
    <us-gaap:IncomeTaxDisclosureTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;b&gt;9. Income Taxes &lt;/b&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We file federal and state consolidated tax&#13;returns with our subsidiaries. Our income tax provision for the years ended July 31, 2020 and 2019 was $1,650; the minimum state&#13;franchise taxes we pay regardless of income or loss.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;At July 31, 2020, we had federal and state&#13;tax net operating loss carry-forwards of approximately $106.2 million and $61.8 million, respectively. At July 31, 2019, we had&#13;federal and state tax net operating loss carry-forwards of approximately $108.3 million and $62.1 million, respectively. Utilization&#13;of the net operating loss carry-forwards may be subject to a substantial annual limitation due to ownership change limitations&#13;that may have occurred or that could occur in the future, as required by Section 382 of the Internal Revenue Code as well as similar&#13;state provisions. These ownership changes may limit the amount of net operating loss carry-forwards that can be utilized annually&#13;to offset future taxable income and tax, respectively. In general, an ownership change, as defined by Section 382 of the Internal&#13;Revenue Code results from a transaction or series of transactions over a three-year period resulting in an ownership change of&#13;more than 50 percentage points of the outstanding stock of a company by certain stockholders or public groups. Since our formation,&#13;we have raised capital through the issuance of capital stock on several occasions (both before and after our initial public offering&#13;in 1996) which, combined with the purchasing stockholders&amp;#8217; subsequent disposition of those shares, may have resulted in such&#13;an ownership change, or could result in an ownership change in the future upon subsequent disposition. While we do not believe&#13;that we have experienced an ownership change, the pertinent tax rules related thereto are complex and subject to varying interpretations,&#13;and thus complete assurance cannot be provided that the taxing authorities would not take an alternative position.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our current federal tax loss carry-forwards&#13;began expiring in the year ended July 31, 2020 and, unless previously utilized, all but $2.4 million will completely expire in&#13;the year ending July 31, 2038. The $2.4 million can be carried forward indefinitely. Our state tax loss carry-forwards began to&#13;expire in the year ending July 31, 2029, and will completely expire in the year ending July 31, 2040.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Significant components of our deferred tax&#13;assets are as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Net operating loss carry-forward&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;26,540,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;26,940,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Stock options and warrants&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,950,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,030,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Other temporary differences&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(120,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(130,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Total deferred tax assets&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;28,370,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;28,840,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Valuation allowance for deferred tax assets&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(28,370,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(28,840,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Net deferred tax assets&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A reconciliation of income taxes computed using&#13;the statutory income tax rate, compared to the effective tax rate, is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Federal tax benefit at the expected statutory rate&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;21.0&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;State income tax, net of federal tax benefit&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.6&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Other&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(18.3&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Valuation allowance&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Income tax benefit - effective rate&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(3.3&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Following authoritative guidance, we recognize&#13;the tax benefit from a tax position if it is more likely than not that the tax position will be sustained on examination by the&#13;taxing authorities, based on the technical merits of the position.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our practice is to recognize interest and/or&#13;penalties related to income tax matters in income tax expense; however we have had no accrued interest or penalties at either July&#13;31, 2020 or July 31, 2019. We are subject to income taxes in the United States and in various states, and our historical tax years&#13;remain subject to future examination by the U.S. and state tax authorities. During the years ended July 31, 2020 and 2019, we did&#13;not record any activity related to our unrecognized tax benefits.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company and its subsidiaries are subject&#13;to federal income tax as well as income tax of multiple state jurisdictions. With few exceptions, the Company is no longer subject&#13;to income tax examination by tax authorities in major jurisdictions for tax years prior to 2012. However, to the extent allowed&#13;by law, the taxing authorities may have the right to examine prior periods where net operating losses were generated and carried&#13;forward, and make adjustments up to the amount of the carryforwards. The Company is not currently under examination by the IRS&#13;or state taxing authorities.&lt;/p&gt;</us-gaap:IncomeTaxDisclosureTextBlock>
    <us-gaap:BasisOfAccountingPolicyPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Basis of Presentation&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The accompanying consolidated financial statements&#13;include the consolidated accounts of PURE Bioscience, Inc. and its wholly owned subsidiary, ETIH2O Inc., a Nevada corporation.&#13;ETIH2O Inc. has no business and no material assets or liabilities and there have been no significant transactions related to ETIH2O&#13;Inc. during the periods presented in the consolidated financial statements. All inter-company balances and transactions have been&#13;eliminated.&lt;/p&gt;</us-gaap:BasisOfAccountingPolicyPolicyTextBlock>
    <us-gaap:RevenueFromContractWithCustomerPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Revenue Recognition&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Effective August 1, 2018, we adopted the Financial&#13;Accounting Standards Board (&amp;#8220;FASB&amp;#8221;) Accounting Standards Codification (&amp;#8220;ASC&amp;#8221;), Topic 606, Revenue from&#13;Contracts with Customers (&amp;#8220;Topic 606&amp;#8221;). Under Topic 606, revenue is recognized at an amount that reflects the consideration&#13;to which we expect to be entitled in exchange for transferring goods or services to a customer. This principle is applied using&#13;the following 5-step process:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="width: 24px"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 24px"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Identify the contract with the customer&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Identify the performance obligations in the contract&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Determine the transaction price&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Allocate the transaction price to the performance obligations in the contract&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5.&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Recognize revenue when (or as) each performance obligation is satisfied&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Under Topic 606, we recognize revenue when&#13;we satisfy a performance obligation by transferring control of the promised goods or services to our customers, in an amount that&#13;reflects the consideration we expect to be entitled to in exchange for those goods or services.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our technology platform is based on patented&#13;stabilized ionic silver, and our initial products contain silver dihydrogen citrate, or SDC. SDC is a broad-spectrum, non-toxic&#13;antimicrobial agent, which offers 24-hour residual protection and formulates well with other compounds. We sell various configurations&#13;and dilutions of SDC direct to customers and through distributors. We currently offer PURE&lt;sup&gt;&amp;#174;&lt;/sup&gt; Hard Surface as a food&#13;contact surface sanitizer and disinfectant to restaurant chains, food processors and food transportation companies. We also offer&#13;PURE Control&lt;sup&gt;&amp;#174;&lt;/sup&gt; as a direct food contact processing aid.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Contract terms for unit price, quantity, shipping&#13;and payment are governed by sales agreements and purchase orders which we consider to be a customer&amp;#8217;s contract in all cases.&#13;The unit price is considered the observable stand-alone selling price for the arrangements. Any promotional or sales discounts&#13;are applied evenly to the units sold for purposes of calculating standalone selling price.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Product sales generally consist of a single&#13;performance obligation that we satisfy at a point in time. We recognize product revenue when the following events have occurred:&#13;(a) we have transferred physical possession of the products, (b) we have a present right to payment, (c) the customer has legal&#13;title to the products, and (d) the customer bears significant risks and rewards of ownership of the products.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Our direct customer and distributor sales are&#13;invoiced based on received purchase orders. Our payment terms on invoiced direct customer and distributor sales range between 30&#13;and 90 days after we satisfy our performance obligation. The majority of our customers are on 30 day payment terms. We currently&#13;offer no right of return on invoiced sales and maintain no allowance for sales returns.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Shipping and handling are treated as activities&#13;to fulfill promises to customers and any amounts billed to a customer, if applicable, represent revenues earned for the goods provided.&#13;Costs related to such shipping and handling billings are classified as cost of sales.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We do not have significant categories of revenue&#13;that may impact how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Variable Consideration&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We record revenue from customers in an amount&#13;that reflects the transaction price we expect to be entitled to after transferring control of those goods or services. From time&#13;to time, we offer sales promotions on our products such as discounts. Variable consideration is estimated at contract inception&#13;only to the extent that it is probable that a significant reversal of revenue will not occur.&lt;/p&gt;</us-gaap:RevenueFromContractWithCustomerPolicyTextBlock>
    <us-gaap:UseOfEstimates contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Use of Estimates&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The preparation of consolidated financial&#13;statements in conformity with accounting principles generally accepted in the United States of America, or GAAP, requires management&#13;to make estimates and assumptions that affect the amounts reported in the consolidated financial statements, and the disclosures&#13;made in the accompanying notes to the consolidated financial statements. Actual results could differ materially from those estimates.&#13;Those estimates and assumptions include estimates for reserves of uncollectible accounts, inventory obsolescence, depreciable&#13;lives of property and equipment, analysis of impairments of recorded long-term tangible and intangible assets, realization of&#13;deferred tax assets, accruals for potential liabilities and assumptions made in valuing stock instruments issued for services.&lt;/p&gt;</us-gaap:UseOfEstimates>
    <us-gaap:CashAndCashEquivalentsPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Cash and Cash Equivalents&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Cash and cash equivalents consist of cash&#13;and highly liquid investments with original maturities from the purchase date of three months or less.&lt;/p&gt;</us-gaap:CashAndCashEquivalentsPolicyTextBlock>
    <us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Restricted Cash&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company is required to maintain $75,000&#13;in a restricted certificate of deposit account in order to fully collateralize four revolving credit card accounts.&lt;/p&gt;</us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy>
    <us-gaap:TradeAndOtherAccountsReceivablePolicy contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Accounts Receivable&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Trade accounts receivable are recorded net&#13;of allowances for doubtful accounts. We evaluate the collectability of our trade accounts receivable based on a number of factors.&#13;In circumstances where we becomes aware of a specific customer&amp;#8217;s inability to meet its financial obligations to the Company,&#13;a specific reserve for bad debts is estimated and recorded, which reduces the recognized receivable to the estimated amount the&#13;Company believes will ultimately be collected. In addition to specific customer identification of potential bad debts, bad debt&#13;charges are recorded based on our historical losses and an overall assessment of past due trade accounts receivable outstanding.&#13;The allowance for doubtful accounts was zero at July 31, 2020 and 2019.&lt;/p&gt;</us-gaap:TradeAndOtherAccountsReceivablePolicy>
    <us-gaap:InventoryPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Inventories&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Inventories are stated at the lower of cost&#13;or net realizable value, and net of a valuation allowance for potential excess or obsolete material. Cost is determined using&#13;the average cost method. We regularly review our inventory quantities on hand and record a provision for excess and obsolete inventory&#13;based primarily on our estimated forecast of product demand and our ability to sell the product(s) concerned. Demand for our products&#13;can fluctuate significantly. Factors that could affect demand for our products include unanticipated changes in consumer preferences,&#13;general market conditions or other factors, which may result in cancellations of advance orders or a reduction in the rate of&#13;reorders placed by customers. Additionally, our management&amp;#8217;s estimates of future product demand may be inaccurate, which&#13;could result in an understated or overstated provision required for excess and obsolete inventory. At July 31, 2020 and 2019,&#13;management determined that a reserve for inventory obsolescence was not required.&lt;/p&gt;</us-gaap:InventoryPolicyTextBlock>
    <us-gaap:PropertyPlantAndEquipmentPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Property, Plant and Equipment&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Property, plant and equipment is stated at&#13;cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of&#13;the assets. The estimated useful lives of our property, plant, and equipment range from three to ten years. Capitalized costs associated&#13;with leasehold improvements are depreciated over the lesser of the useful life of the asset or the remaining life of the lease.&#13;Depreciation is generally included in selling, general and administrative expense. Depreciation related to manufacturing is systematically&#13;allocated to inventory produced, and expensed through cost of goods sold at the time inventory is sold.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Management assesses the carrying value of&#13;property and equipment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. If&#13;there is indication of impairment, management prepares an estimate of future cash flows expected to result from the use of the&#13;asset and its eventual disposition. If these cash flows are less than the carrying amount of the asset, an impairment loss is&#13;recognized to write down the asset to its estimated fair value. For the years ended July 31, 2020 and 2019, Company Management&#13;determined there were no indicators of impairment of its property and equipment.&lt;/p&gt;</us-gaap:PropertyPlantAndEquipmentPolicyTextBlock>
    <us-gaap:IntangibleAssetsFiniteLivedPolicy contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Patents&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We have filed a number of patent applications&#13;with the United States Patent and Trademark Office and in foreign countries. Certain legal and related costs incurred in connection&#13;with pending patent applications have been capitalized. Costs related to successful patent applications are amortized over the&#13;lesser of the remaining useful life of the related technology or the remaining patent life, commencing on the date the patent&#13;is issued. Capitalized costs related to patent applications are expensed in the period in which a determination is made not to&#13;pursue such applications.&lt;/p&gt;</us-gaap:IntangibleAssetsFiniteLivedPolicy>
    <us-gaap:ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Impairment of Long-Lived Assets&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In accordance with GAAP, if indicators of&#13;impairment exist, we assess the recoverability of the affected long-lived assets by determining whether the carrying value of&#13;such assets can be recovered through undiscounted future operating cash flows. If impairment is indicated, we measure the amount&#13;of such impairment by comparing the carrying value of the asset to the fair value of the asset and we record the impairment as&#13;a reduction in the carrying value of the related asset and a charge to operating results. Estimating the undiscounted future cash&#13;flows associated with long-lived assets requires judgment, and assumptions could differ materially from actual results. There&#13;were no patent impairments during the years ended July 31, 2020 or 2019.&lt;/p&gt;</us-gaap:ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock>
    <PURE:ShippingAndHandlingCostsPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Shipping and Handling Costs&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Shipping and handling costs incurred by us&#13;for product shipments are included in cost of goods sold.&lt;/p&gt;</PURE:ShippingAndHandlingCostsPolicyTextBlock>
    <us-gaap:ResearchAndDevelopmentExpensePolicy contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Research and Development Costs&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Research and development costs are expensed&#13;as incurred.&lt;/p&gt;</us-gaap:ResearchAndDevelopmentExpensePolicy>
    <us-gaap:ShareBasedCompensationOptionAndIncentivePlansPolicy contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Share-Based Compensation&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We periodically issue stock options and restricted&#13;stock awards to employees and non-employees in non-capital raising transactions for services and for financing costs. We account&#13;for such grants issued and vesting to employees based on ASC 718, whereby the value of the award is measured on the date of grant&#13;and recognized as compensation expense on the straight-line basis over the vesting period. In prior periods, we accounted for stock&#13;option and warrant grants issued and vesting to non-employees in accordance with the authoritative guidance of the FASB whereby&#13;the value of the stock compensation is based upon the measurement date as determined at either a) the date at which a performance&#13;commitment is reached, or b) at the date at which the necessary performance to earn the equity instruments is complete. On August&#13;1, 2019, the Company adopted Accounting Standards Update (ASU) 2018-07 which expands the scope of Topic 718 to include share-based&#13;payment transactions for acquiring goods and services from nonemployees. The Company recognizes the fair value of stock-based compensation&#13;within its Statements of Operations with classification depending on the nature of the services rendered. The adoption of ASU 2018-07&#13;had no cumulative effect on previously reported amounts.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We estimate the fair value of share-based&#13;payment awards at the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model requires&#13;the input of subjective assumptions, including price volatility of the underlying stock, risk-free interest rate, dividend yield,&#13;and expected life of the option. Share-based compensation expense is based on awards ultimately expected to vest, and therefore&#13;is reduced by expected forfeitures.&lt;/p&gt;</us-gaap:ShareBasedCompensationOptionAndIncentivePlansPolicy>
    <us-gaap:FairValueMeasurementPolicyPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Fair Value Measurements&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The Company determines the fair value of its&#13;assets and liabilities based on the exchange price in U.S. dollars that would be received for an asset or paid to transfer a liability&#13;(an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market&#13;participants on the measurement date. Valuation techniques used to measure fair value maximize the use of observable inputs and&#13;minimize the use of unobservable inputs. The Company uses a fair value hierarchy with three levels of inputs, of which the first&#13;two are considered observable and the last unobservable, to measure fair value:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="width: 24px; text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 24px; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Level 1 &amp;#8212; Quoted prices in active markets for identical assets or liabilities.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Level 2 &amp;#8212; Inputs, other than Level 1, that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: top"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#9679;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Level 3 &amp;#8212; Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The carrying amounts of financial instruments&#13;such as cash, accounts receivable, inventories, accounts payable and accrued liabilities, approximate the related fair values&#13;due to the short-term maturities of these instruments.&lt;/p&gt;</us-gaap:FairValueMeasurementPolicyPolicyTextBlock>
    <us-gaap:ConcentrationRiskCreditRisk contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Concentrations&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Gross sales&lt;/i&gt;. For the year ended July&#13;31, 2020, three individual customers accounted for 16%, 13% and 11% of our net product sales. No other individual customer accounted&#13;for 10% or more of our net product sales. The geographic breakdown of net product sales was as follows: 98% U.S. and 2% foreign.&#13;For the year ended July 31, 2019, one individual customer accounted for 15%, and two individual customers accounted for 11% of&#13;our net product sales. No other individual customer accounted for 10% or more of our net product sales. All of our net product&#13;sales occurred in the United States.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Accounts receivable. &lt;/i&gt;As of July 31,&#13;2020, we had accounts receivable from three customers that comprised 21%, 16% and 11% of total accounts receivable, respectively.&#13;As of July 31, 2019, we had accounts receivable from two customers that comprised of 36%, and 20% of total accounts receivable,&#13;respectively.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Purchases. &lt;/i&gt;For the fiscal year ended&#13;July 31, 2020, one vendor accounted for 54% of our purchases. For the fiscal year ended July 31, 2019, one vendor accounted for&#13;18% of our purchases.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;Accounts payable.&lt;/i&gt; As of July 31, 2020,&#13;one vendor accounted for 66% of the total trade accounts payable. As of July 31, 2019, two vendors accounted for 14% and 13% of&#13;the total trade accounts payable, respectively.&lt;/p&gt;</us-gaap:ConcentrationRiskCreditRisk>
    <us-gaap:IncomeTaxPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Income Taxes&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We recognize deferred tax assets and liabilities&#13;for temporary differences between the tax basis of assets and liabilities and the amounts at which they are carried in the financial&#13;statements based upon the enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation&#13;allowance is established to reduce deferred tax assets to the amount expected to be realized.&lt;/p&gt;</us-gaap:IncomeTaxPolicyTextBlock>
    <us-gaap:EarningsPerSharePolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Income (Loss) Per Share&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Basic earnings (loss) per share is computed&#13;by dividing net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding&#13;during the period. Diluted earnings per share is computed by dividing net income attributable to common stockholders by the sum&#13;of the weighted-average number of common shares outstanding during the period and the weighted-average number of dilutive common&#13;share equivalents outstanding during the period, using the treasury stock method. Dilutive common share equivalents are comprised&#13;of in-the-money stock options and restricted stock units, based on the average stock price for each period using the treasury&#13;stock method. For the fiscal year ended July 31, 2020, the incremental dilutive common share equivalents were 2,402,335. Since&#13;we incurred a loss for the fiscal year ended July 31, 2019 the number of shares issuable upon the exercise of stock options, the&#13;vesting of restricted stock units, and the exercise of warrants, none of which are included in the computation of basic net loss&#13;per common share, was 9,736,772.&lt;/p&gt;</us-gaap:EarningsPerSharePolicyTextBlock>
    <us-gaap:SegmentReportingPolicyPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Segments&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&amp;#160;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;We operate in one segment for the manufacture&#13;and distribution of our products. In accordance with the &amp;#8220;Segment Reporting&amp;#8221; Topic of the ASC, our chief operating&#13;decision maker has been identified as the Chief Executive Officer and President, who reviews operating results to make decisions&#13;about allocating resources and assessing performance for the entire Company. Existing guidance, which is based on a management&#13;approach to segment reporting, establishes requirements to report selected segment information quarterly and to report annually&#13;entity-wide disclosures about products and services, major customers, and the countries in which the entity holds material assets&#13;and reports revenue. All material operating units qualify for aggregation under &amp;#8220;Segment Reporting&amp;#8221; due to their similar&#13;customer base and similarities in: economic characteristics; nature of products and services; and procurement, manufacturing and&#13;distribution processes. Since the Company operates in one segment, all financial information required by &amp;#8220;Segment Reporting&amp;#8221;&#13;can be found in the accompanying financial statements.&lt;/p&gt;</us-gaap:SegmentReportingPolicyPolicyTextBlock>
    <us-gaap:PriorPeriodReclassificationAdjustmentDescription contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Reclassification&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;For the fiscal year ended July 31, 2019, share-based&#13;compensation expense of $2,449,000 has now been included in selling, general and administrative expense. This reclassification&#13;did not have an impact on our results of operations or financial condition for the fiscal year ended July 31, 2020 and 2019.&lt;/p&gt;</us-gaap:PriorPeriodReclassificationAdjustmentDescription>
    <us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;i&gt;&lt;u&gt;Recent Accounting Pronouncements&lt;/u&gt;&lt;/i&gt;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In June 2016, the FASB issued ASU No. 2016-13,&#13;Credit Losses - Measurement of Credit Losses on Financial Instruments (&amp;#8220;ASC 326&amp;#8221;). The standard significantly changes&#13;how entities will measure credit losses for most financial assets, including accounts and notes receivables. The standard will&#13;replace today&amp;#8217;s &amp;#8220;incurred loss&amp;#8221; approach with an &amp;#8220;expected loss&amp;#8221; model, under which companies will&#13;recognize allowances based on expected rather than incurred losses. Entities will apply the standard&amp;#8217;s provisions as a cumulative-effect&#13;adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. As small&#13;business filer, the standard will be effective for us for interim and annual reporting periods beginning after December 15, 2022.&#13;The Company is currently assessing the impact of adopting this standard on the Company&amp;#8217;s financial statements and related&#13;disclosures.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;In August 2020, the FASB issued ASU No. 2020-06&#13;(&amp;#8220;ASU 2020-06&amp;#8221;)&amp;#160;&amp;#8220;Debt&amp;#8212;Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and&#13;Hedging&amp;#8212;Contracts in Entity&amp;#8217;s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in&#13;an Entity&amp;#8217;s Own Equity.&amp;#8221;&amp;#160;ASU 2020-06 will simplify the accounting for convertible instruments by reducing the&#13;number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models will&#13;result in fewer embedded conversion features being separately recognized from the host contract as compared with current GAAP.&#13;Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are&#13;not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope&#13;exception from derivative accounting and (2) convertible debt instruments issued with substantial premiums for which the premiums&#13;are recorded as paid-in capital. ASU 2020-06 also amends the guidance for the derivatives scope exception for contracts in an entity&amp;#8217;s&#13;own equity to reduce form-over-substance-based accounting conclusions. ASU 2020-06 will be effective January 1, 2024, for the Company.&#13;Early adoption is permitted, but no earlier than January 1, 2021, including interim periods within that year. Management is currently&#13;evaluating the effect of the adoption of ASU 2020-06 on the consolidated financial statements, but currently does not believe ASU&#13;2020-06 will have a significant impact on the Company&amp;#8217;s accounting.&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Recent accounting pronouncements issued by&#13;the FASB, including its Emerging Issues Task Force, the American Institute of Certified Public Accountants, and the Securities&#13;and Exchange Commission did not or are not believed by management to have a material impact on the Company&amp;#8217;s present or&#13;future consolidated financial statement presentation or disclosures.&lt;/p&gt;</us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock>
    <us-gaap:ScheduleOfInventoryCurrentTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Inventories consist of the following:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Raw materials&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;17,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;30,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Finished goods&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;530,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;147,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;547,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;177,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleOfInventoryCurrentTableTextBlock>
    <us-gaap:PropertyPlantAndEquipmentTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Property, plant, and equipment consist of the&#13;following:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Computers and equipment&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;819,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,001,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Furniture and fixtures&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;21,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;819,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,022,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Less accumulated depreciation&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(503,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(660,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;316,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;362,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0"&gt;&lt;/p&gt;</us-gaap:PropertyPlantAndEquipmentTextBlock>
    <us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Patents consist of the following:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Patents&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3,504,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3,504,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Less accumulated amortization&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(3,063,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(2,975,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;441,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;529,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock>
    <us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;At July 31, 2020, future patent amortization&#13;expense is expected to be as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 82%; text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2021&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 15%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;76,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2022&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;48,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2023&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;42,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2024&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;42,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2025&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;42,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: justify"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Thereafter&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;191,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: justify"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;441,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock>
    <us-gaap:ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A summary of our warrant activity and related&#13;data is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 82%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2018&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 15%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,861,096&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Issued&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(2,399,999&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Expired/Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="padding-bottom: 1.5pt"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2019&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;461,097&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Issued&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Expired/Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(133,332&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2020&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;327,765&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock>
    <PURE:SummaryOfInformationRelatedToWarrantsOutstandingTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The following table summarizes information&#13;related to warrants outstanding at July 31, 2020:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Expiration&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Exercise&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Date&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;12/01/21&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.25&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;58,824&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;12/01/21&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.28&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;117,647&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;01/23/22&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.25&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;117,647&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;01/23/22&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.28&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;33,647&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;327,765&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</PURE:SummaryOfInformationRelatedToWarrantsOutstandingTableTextBlock>
    <us-gaap:ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A summary of our restricted stock unit activity&#13;and related data is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 82%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2018&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 15%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,525,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;725,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Vested&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(206,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Forfeited&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(131,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2019&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,912,500&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;500,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Vested&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(400,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Forfeited&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2020&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,012,500&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock>
    <us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A summary of our stock option activity for&#13;the fiscal years ended July 31, 2020 and 2019 is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Shares&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Weighted-&lt;br /&gt;&#13;Average&lt;br /&gt;&#13;Exercise Price&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;Aggregate&lt;br /&gt;&#13;Intrinsic&lt;br /&gt;&#13;Value&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 55%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2018&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 12%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,626,093&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 12%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.09&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 12%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;300,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.52&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(562,968&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.47&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2019&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,363,125&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1.04&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Granted&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,550,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.58&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4,300&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercised&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(440,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.82&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Cancelled&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(40,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;11.41&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding at July 31, 2020&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9,432,875&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.88&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5,255,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock>
    <PURE:ScheduleOfStockOptionOutstandingAndExercisable contextRef="From2019-08-01to2020-07-31">&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="10" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Outstanding&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="10" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Exercisable&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Range of Exercise Prices&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Number of Shares Outstanding&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Remaining Contractual Life &lt;br /&gt;&#13;(in years)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Exercise Price&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Number of Shares Exercisable&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Remaining Contractual Life &lt;br /&gt;&#13;(in years)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Weighted Average Exercise Price&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 46%; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$0.25 to $0.50&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,440,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9.29&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.34&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;541,250&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9.19&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 6%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.34&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$0.51 to $1.50&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,973,500&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.59&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.97&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;6,505,167&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;3.63&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.99&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$1.51 to $6.72&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;19,375&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.95&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;6.72&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;19,375&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.95&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;6.72&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;9,432,875&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5.30&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.88&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;7,065,792&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.05&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.96&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</PURE:ScheduleOfStockOptionOutstandingAndExercisable>
    <us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;The fair value of stock options was estimated&#13;at the grant date using the following weighted average assumptions:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid"&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&lt;b&gt;For the years ended&lt;/b&gt;&lt;/p&gt;&#13;        &lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/p&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Volatility&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;83.15&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;75.67&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Risk-free interest rate&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.89&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2.63&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Dividend yield&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.0&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.0&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Expected life&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;5.45 years&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;4.80 years&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;&lt;/p&gt;</us-gaap:ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock>
    <us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;Significant components of our deferred tax&#13;assets are as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="6" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;July 31,&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td style="text-align: center"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Net operating loss carry-forward&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;26,540,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;26,940,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Stock options and warrants&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;1,950,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;2,030,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Other temporary differences&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(120,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(130,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Total deferred tax assets&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;28,370,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;28,840,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Valuation allowance for deferred tax assets&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(28,370,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(28,840,000&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td style="padding-left: 10pt"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Net deferred tax assets&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;$&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 2.25pt double; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;</us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock>
    <us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock contextRef="From2019-08-01to2020-07-31">&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"&gt;A reconciliation of income taxes computed using&#13;the statutory income tax rate, compared to the effective tax rate, is as follows:&lt;/p&gt;&#13;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&amp;#160;&lt;/p&gt;&#13;&#13;&lt;table cellspacing="0" cellpadding="0" style="font: 11pt Calibri, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse"&gt;&#13;&lt;tr style="vertical-align: bottom"&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2020&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td colspan="2" style="border-bottom: black 1.5pt solid; text-align: center"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&lt;b&gt;2019&lt;/b&gt;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td style="width: 66%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Federal tax benefit at the expected statutory rate&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="width: 14%; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;21.0&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td style="width: 1%"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;State income tax, net of federal tax benefit&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;0.6&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Other&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(18.3&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: white"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Valuation allowance&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;tr style="vertical-align: bottom; background-color: #CCEEFF"&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;Income tax benefit - effective rate&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;&amp;#8212;&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;%&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid"&gt;&amp;#160;&lt;/td&gt;&#13;    &lt;td style="border-bottom: black 1.5pt solid; text-align: right"&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;(3.3&lt;/font&gt;&lt;/td&gt;&#13;    &lt;td&gt;&lt;font style="font: 10pt Times New Roman, Times, Serif"&gt;)%&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&#13;&lt;/table&gt;&#13;&lt;p style="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"&gt;&lt;/p&gt;</us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock>
</xbrli:xbrl>