<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2023v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-07-25T10:28:15-04:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>382172611</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>WSR CERTIFIED PUBLIC ACCOUNTANTS PC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>167 LITTLE LAKE DRIVE PO BOX 238</AddressLine1Txt>
        <CityNm>ANN ARBOR</CityNm>
        <StateAbbreviationCd>MI</StateAbbreviationCd>
        <ZIPCd>481062389</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>061629714</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>HPLC INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>HPLC</BusinessNameControlTxt>
      <PhoneNum>7342760326</PhoneNum>
      <USAddress>
        <AddressLine1Txt>1830 KESTREL</AddressLine1Txt>
        <CityNm>ANN ARBOR</CityNm>
        <StateAbbreviationCd>MI</StateAbbreviationCd>
        <ZIPCd>48103</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>ROBERT KENNEDY</PersonNm>
      <PersonTitleTxt>TREASURER/SECRETARY</PersonTitleTxt>
      <PhoneNum>7346154363</PhoneNum>
      <SignatureDt>2024-05-29</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>ROBERT</PersonFirstNm>
        <PersonLastNm>KENNEDY</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>false</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>TAVA L FINN</PreparerPersonNm>
      <PTIN>P01956232</PTIN>
      <PhoneNum>7346622522</PhoneNum>
      <PreparationDt>2024-07-25</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990 documentId="RetDoc2" referenceDocumentId="RetDoc3">
      <PrincipalOfficerNm>ROBERT KENNEDY</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>930 N UNIVERSITY AVE</AddressLine1Txt>
        <CityNm>ANN ARBOR</CityNm>
        <StateAbbreviationCd>MI</StateAbbreviationCd>
        <ZIPCd>481091055</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>0</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>2001</FormationYr>
      <LegalDomicileStateCd>CA</LegalDomicileStateCd>
      <ActivityOrMissionDesc>HPLC, INC EXISTS TO PROVIDE EDUCATION AND SCIENTIFIC EXCHANGE FOR THE FIELD OF HIGH PERFORMANCE LIQUID CHROMATOGRAPHY AND RELATED CHEMICAL SEPARATIONS METHODS.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>4</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>4</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>635667</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>0</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>54</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>0</CYInvestmentIncomeAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>635721</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>0</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>136445</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>2500</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>2000</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>430544</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>4060</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>568989</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>6560</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>66732</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-6560</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>281081</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>274521</TotalAssetsEOYAmt>
      <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>281081</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>274521</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>HPLC, INC EXISTS TO PROVIDE EDUCATION AND SCIENTIFIC EXCHANGE FOR THE FIELD OF HIGH PERFORMANCE LIQUID CHROMATOGRAPHY AND RELATED CHEMICAL SEPARATIONS METHODS.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>2810</ExpenseAmt>
      <GrantAmt>2500</GrantAmt>
      <Desc>THE PRIMARY PROGRAM IS TO RUN A SCIENTIFIC CONFERENCE FOR ~ 6 DAYS EVERY OTHER YEAR IN THE USA. THERE WAS NO CONFERENCE IN 2023. THE CONFERENCE WILL INCLUDE: 1)ORAL PRESENTATIONS OF SCIENTIFIC PROGRESS BY BOTH INVITED AND CONTRIBUTEDSPEAKERS; 2) POSTER PRESENTATIONS OF SCIENTIFIC PROGRESS; 3) WORKSHOPS AND SHORT COURSES RELATED TO HPLC; 4) A VENDOR EXHIBIT WHERE PURVEYORS OF HPLC AND ANCILLARY EQUIPMENT CAN DISPLAY PRODUCTS AND SERVICES; 5) AWARD PRESENTATIONS; 6) A SOCIAL PROGRAM FOR INTERACTION OF SCIENTISTS. THE CONFERENCE HAS BETWEEN 500-1000 PARTICIPANTS FROM AROUND THE WORLD. THEY RECEIVE FUNDS FROM "SPONSORS" (COMPANIES WHO WORK IN THE FIELD AND GAIN OPPORTUNITIES TO PROMOTE THE FIELD AND DISPLAY PRODUCTS) AND REGISTRATION OF ATTENDEES. FUNDS ARE USED TO PAY FOR THE CONFERENCE VENUE AND SERVICES, SOCIAL PROGRAM, TRAVEL FOR INVITED SPEAKERS, AND THE CONFERENCE ORGANIZER.</Desc>
      <TotalProgramServiceExpensesAmt>2810</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc4">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>false</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd>false</DonorAdvisedFundInd>
      <ConservationEasementsInd>false</ConservationEasementsInd>
      <CollectionsOfArtInd>false</CollectionsOfArtInd>
      <CreditCounselingInd>false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd>false</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd>false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd>false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd>false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd>false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd>false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd>false</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd>false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>false</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd>false</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>0</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>false</BackupWthldComplianceInd>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>4</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>4</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>false</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>false</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>false</ConflictOfInterestPolicyInd>
      <WhistleblowerPolicyInd>false</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>false</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>false</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <OtherWebsiteInd>X</OtherWebsiteInd>
      <BooksInCareOfDetail>
        <PersonNm>ROBERT KENNEDY</PersonNm>
        <PhoneNum>7346154363</PhoneNum>
        <USAddress>
          <AddressLine1Txt>930 N UNIVERSITY AVE</AddressLine1Txt>
          <CityNm>ANN ARBOR</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>481091055</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT KENNEDY</PersonNm>
        <TitleTxt>TREASURER/SE</TitleTxt>
        <AverageHoursPerWeekRt>0.50</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SUSAN OLESIK</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN YATES</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>0.50</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KELLY ZHANG</PersonNm>
        <TitleTxt>DIRECTOR/ASS</TitleTxt>
        <AverageHoursPerWeekRt>0.50</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>false</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </TotalRevenueGrp>
      <ForeignGrantsGrp>
        <TotalAmt>2500</TotalAmt>
        <ProgramServicesAmt>2500</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>2550</TotalAmt>
        <ManagementAndGeneralAmt>2550</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>44</TotalAmt>
        <ManagementAndGeneralAmt>44</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>214</TotalAmt>
        <ProgramServicesAmt>214</ProgramServicesAmt>
      </DepreciationDepletionGrp>
      <OtherExpensesGrp>
        <Desc>CORPORATE FILING FEE</Desc>
        <TotalAmt>610</TotalAmt>
        <ManagementAndGeneralAmt>610</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>WEBSITE</Desc>
        <TotalAmt>546</TotalAmt>
        <ManagementAndGeneralAmt>546</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BANK FEE</Desc>
        <TotalAmt>96</TotalAmt>
        <ProgramServicesAmt>96</ProgramServicesAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>6560</TotalAmt>
        <ProgramServicesAmt>2810</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3750</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>281081</BOYAmt>
        <EOYAmt>201235</EOYAmt>
      </CashNonInterestBearingGrp>
      <OthNotesLoansReceivableNetGrp>
        <EOYAmt>70000</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <IntangibleAssetsGrp>
        <EOYAmt>3286</EOYAmt>
      </IntangibleAssetsGrp>
      <TotalAssetsGrp>
        <BOYAmt>281081</BOYAmt>
        <EOYAmt>274521</EOYAmt>
      </TotalAssetsGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>281081</BOYAmt>
        <EOYAmt>274521</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>281081</BOYAmt>
        <EOYAmt>274521</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>281081</BOYAmt>
        <EOYAmt>274521</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-6560</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc4">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus1YearAmt>635667</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>635667</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus1YearAmt>635667</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>635667</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>635667</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus1YearAmt>54</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>54</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus1YearAmt>54</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>54</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus1YearAmt>635721</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>635721</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.99990</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.99990</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PRIMARY PROGRAM IS TO RUN A SCIENTIFIC CONFERENCE FOR ~ 6 DAYS EVERY OTHER YEAR IN THE USA. THERE WAS NO CONFERENCE IN 2023. THE CONFERENCE WILL INCLUDE: 1)ORAL PRESENTATIONS OF SCIENTIFIC PROGRESS BY BOTH INVITED AND CONTRIBUTEDSPEAKERS; 2) POSTER PRESENTATIONS OF SCIENTIFIC PROGRESS; 3) WORKSHOPS AND SHORT COURSES RELATED TO HPLC; 4) A VENDOR EXHIBIT WHERE PURVEYORS OF HPLC AND ANCILLARY EQUIPMENT CAN DISPLAY PRODUCTS AND SERVICES; 5) AWARD PRESENTATIONS; 6) A SOCIAL PROGRAM FOR INTERACTION OF SCIENTISTS. THE CONFERENCE HAS BETWEEN 500-1000 PARTICIPANTS FROM AROUND THE WORLD. THEY RECEIVE FUNDS FROM "SPONSORS" (COMPANIES WHO WORK IN THE FIELD AND GAIN OPPORTUNITIES TO PROMOTE THE FIELD AND DISPLAY PRODUCTS) AND REGISTRATION OF ATTENDEES. FUNDS ARE USED TO PAY FOR THE CONFERENCE VENUE AND SERVICES, SOCIAL PROGRAM, TRAVEL FOR INVITED SPEAKERS, AND THE CONFERENCE ORGANIZER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 WILL BE REVIEWED BY THE SECRETARY, ROBERT KENNEDY, IN CONSULTATION WITH OTHER OFFICERS (JOHN YATES, SUSAN OLESIK, AND KELLY ZHANG) AND, IF NECESSARY, AN ACCOUNTING FIRM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AVAILABLE UPON REQUEST</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
