<?xml version="1.0" encoding="UTF-8"?>
<!--REG30PARAB V1.0 (01-06-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Para_B_Of_Part_A_Of_Schedule_III/2026-04-30/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="http://www.sebi.gov.in/xbrl/2026-04-30/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-2026-04-30.xsd"/><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">544184</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-09-22</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_CapacityAddition"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">544184</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-09-22</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIIIAxis">in-capmkt:CapacityAdditionMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">BOROSCI</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">BOROSIL SCIENTIFIC LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">544184</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE02L001032</in-capmkt:ISIN><in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">Capacity addition/Product launch (Sub-para 3-Para B)</in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="I_CapacityAddition">Capacity addition</in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">New</in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting contextRef="MainI">true</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting><in-capmkt:DateOfBoardMeeting contextRef="MainI">2026-09-22</in-capmkt:DateOfBoardMeeting><in-capmkt:StartTimeOfTheMeeting contextRef="MainI">12:30:00</in-capmkt:StartTimeOfTheMeeting><in-capmkt:EndTimeOfTheMeeting contextRef="MainI">13:07:00</in-capmkt:EndTimeOfTheMeeting><in-capmkt:DateOfReport contextRef="MainI">2026-09-22</in-capmkt:DateOfReport><in-capmkt:ExistingCapacityOfProjectOrPlant contextRef="MainI">The existing production capacity for glassware products for which expansion is proposed, is ~ 15 lakhs units per annum.</in-capmkt:ExistingCapacityOfProjectOrPlant><in-capmkt:ExistingCapacityUtilizationByProjectOrPlant contextRef="MainI">~ 87%</in-capmkt:ExistingCapacityUtilizationByProjectOrPlant><in-capmkt:ProposedCapacityAdditionInProjectOrPlant contextRef="MainI">Expansion of production capacity from ~ 15 lakhs units per annum to ~ 108 lakhs units per annum.</in-capmkt:ProposedCapacityAdditionInProjectOrPlant><in-capmkt:PeriodWithinWhichCapacityIsToBeAdded contextRef="MainI">The commercial production from the additional facility is expected to begin by March 2027.</in-capmkt:PeriodWithinWhichCapacityIsToBeAdded><in-capmkt:InvestmentRequiredForProposedCapacityAddition contextRef="MainI" unitRef="INR" decimals="0">600000000</in-capmkt:InvestmentRequiredForProposedCapacityAddition><in-capmkt:ModeOfFinancingForCapacityAddition contextRef="MainI">Combination of Internal Accruals &amp; Debts</in-capmkt:ModeOfFinancingForCapacityAddition><in-capmkt:RationaleForCapacityAddition contextRef="MainI">The Company has been supplying various glassware products to Borosil Limited (“BL”) in terms of existing manufacturing arrangement with them. This arrangement contributes to the Company's revenue and enables efficient utilisation of its manufacturing capacity, machinery, equipment and other infrastructure. The proposed capital expenditure is being undertaken to augment the Company's production capacity and cater to the increasing demand of products from BL. 

Further, the Company would apply for the subsidy benefits on the eligible investment, as may be available under the Viksit Gujarat Industrial Policy 2026.</in-capmkt:RationaleForCapacityAddition></xbrli:xbrl>
