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<!--OBM V1.0 (01-01-2026)-->
<xbrli:xbrl xmlns:in-capmkt="https://www.sebi.gov.in/xbrl/2024-05-31/in-capmkt" xmlns:in-capmkt-roles="https://www.sebi.gov.in/xbrl/Announcements_Pertaining_To_Outcome_Of_Board_Meeting/2024-05-31/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="https://www.sebi.gov.in/xbrl/2024-05-31/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2024-05-31.xsd"/><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">543318</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-01</xbrli:startDate><xbrli:endDate>2026-08-01</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">543318</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-01</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="DividendD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">543318</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-08-01</xbrli:startDate><xbrli:endDate>2026-08-01</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="DividendI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">543318</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-08-01</xbrli:instant></xbrli:period></xbrli:context><in-capmkt:NSESymbol contextRef="MainI">CLEAN</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">CLEAN SCIENCE AND TECHNOLOGY LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:TypeOfAnnouncementOfBoardMeeting contextRef="MainD">New</in-capmkt:TypeOfAnnouncementOfBoardMeeting><in-capmkt:FirstEventOfBoardMeeting contextRef="MainD">Dividend</in-capmkt:FirstEventOfBoardMeeting><in-capmkt:DateOfReport contextRef="MainI">2026-08-01</in-capmkt:DateOfReport><in-capmkt:WhetherPriorIntimationOfBoardMeetingConsideringInterimOrFinalDividendGivenToStockExchange contextRef="DividendI">true</in-capmkt:WhetherPriorIntimationOfBoardMeetingConsideringInterimOrFinalDividendGivenToStockExchange><in-capmkt:DateOfPriorIntimationSubmittedToStockExchangeOnBoardMeetingToConsiderDeclarationOfInterimOrRecommendationOfFinalDividend contextRef="DividendI">2026-07-17</in-capmkt:DateOfPriorIntimationSubmittedToStockExchangeOnBoardMeetingToConsiderDeclarationOfInterimOrRecommendationOfFinalDividend><in-capmkt:DateOfBoardMeetingConsideringDeclarationOfInterimOrRecommendationOfFinalDividend contextRef="DividendI">2026-08-01</in-capmkt:DateOfBoardMeetingConsideringDeclarationOfInterimOrRecommendationOfFinalDividend><in-capmkt:StartTimeOfBoardMeetingForAnnouncementOfDividend contextRef="DividendD">12:30:00</in-capmkt:StartTimeOfBoardMeetingForAnnouncementOfDividend><in-capmkt:EndTimeOfBoardMeetingForAnnouncementOfDividend contextRef="DividendD">13:30:00</in-capmkt:EndTimeOfBoardMeetingForAnnouncementOfDividend><in-capmkt:WhetherDeclarationOfInterimDividendOrRecommendationOfFinalDividendApprovedByTheBoard contextRef="DividendD">Yes</in-capmkt:WhetherDeclarationOfInterimDividendOrRecommendationOfFinalDividendApprovedByTheBoard><in-capmkt:FirstTypeOfDividend contextRef="DividendD">Final</in-capmkt:FirstTypeOfDividend><in-capmkt:RateOfFinalDividendRecommendedPerEquityShare contextRef="DividendI">400</in-capmkt:RateOfFinalDividendRecommendedPerEquityShare><in-capmkt:WhetherRecordDateOrBookClosureBeenFixedForFinalDividend contextRef="DividendI">true</in-capmkt:WhetherRecordDateOrBookClosureBeenFixedForFinalDividend><in-capmkt:RecordDateOrBookClosureDateForFinalDividend contextRef="DividendD">Book Closure Date</in-capmkt:RecordDateOrBookClosureDateForFinalDividend><in-capmkt:StartDateOfBookClosureDateOfFinalDividend contextRef="DividendI">2026-09-06</in-capmkt:StartDateOfBookClosureDateOfFinalDividend><in-capmkt:EndDateOfBookClosureDateOfFinalDividend contextRef="DividendI">2026-09-12</in-capmkt:EndDateOfBookClosureDateOfFinalDividend><in-capmkt:WhetherDateOfGeneralMeetingIsFixedForThePurposeOfFinalDividend contextRef="DividendI">true</in-capmkt:WhetherDateOfGeneralMeetingIsFixedForThePurposeOfFinalDividend><in-capmkt:DateOfGeneralMeetingForFinalDividend contextRef="DividendI">2026-09-12</in-capmkt:DateOfGeneralMeetingForFinalDividend><in-capmkt:ProposedDateWithinWhichPaymentOfFinalDividendShallBeMadeByTheCompanyForWhichGeneralMeetingDateHasBeenFixed contextRef="DividendI">2026-09-30</in-capmkt:ProposedDateWithinWhichPaymentOfFinalDividendShallBeMadeByTheCompanyForWhichGeneralMeetingDateHasBeenFixed><in-capmkt:PeriodForWhichFinalDividendIsDeclared contextRef="DividendI">Dividend for FY 2025-26</in-capmkt:PeriodForWhichFinalDividendIsDeclared><in-capmkt:RemarksForWebsiteDisseminationForDividendEvent contextRef="DividendI">The Board at its meeting held on 14.05.2026, approved a final dividend of Rs.4/- per share for FY26. Subsequently, Board at its meeting dated 01.08.2026 approved the date of Annual General Meeting, Book Closure period and Dividend Payment Date. The Company had already submitted XBRL for outcome of  Board Meeting dated 14.05.2026 disclosing the details of the final dividend for FY26. Accordingly, this XBRL filing is being submitted to provide the details relating to the Annual General Meeting date, Book Closure period and Dividend Payment Date.</in-capmkt:RemarksForWebsiteDisseminationForDividendEvent></xbrli:xbrl>
