ClassificationofLaboratoryVentilationDesignLevelsDevelopedbyASHRAETechnicalCommittee9.10,LaboratorySystemsLaboratoryClassificationSubcommitteeInpartnershipwithAmericanChemicalSocietyDivisionofChemicalHealthandSafetyandAmericanIndustrialHygieneAssociationLaboratoryHealthandSafetyCommitteeAtlantaThispublicationwasdevelopedbytheLaboratoryClassificationSubcommitteeofASHRAETechnicalCommittee(TC)9.10,LaboratorySystems,withsupportfrommembersofotherorganizationsthatspecializeinlaboratoryhealthandsafety.ASHRAETC9.10LaboratoryClassificationSubcommitteeAdamBare,PE,ChairNewcomb&Boyd,LLPRolandCharneux,PE,HFDP,ASHRAEFellowPageau&MorelJimCooganSiemensGaryGoodson,PEExposureControlTechnologies,Inc.HenryHaysUSDAAgriculturalResearchServiceNathanHo,PEP2SEngineering,Inc.GuyPerreaultEvap-TechMTCInc.TomSmithExposureControlTechnologies,Inc.ContributorsfromOtherOrganizationsDebbieDeckerUniversityofCalifornia,DavisKenKretchmanNorthCarolinaStateUniversityRebeccaLally,CIHSouthernCaliforniaEdisonElizabethKolacki,PECornellUniversityPeterSlinnNaturalResourcesCanadaRalphStuart,CIHKeeneStateCollegeEllenSweetCornellUniversityThisworkistheproductofaneffortstartedbyAndrewDymekwellover10yearsago.Thankstoeveryoneinvolvedfortheirhelpinproducingthisdocument.SpecialthanksgotoTomSmithforhisconsiderableefforts.Updates/errataforthispublicationwillbepostedontheASHRAEwebsiteatwww.ashrae.org/publicationupdates.ISBN978-1-939200-90-7(PDF)©2018ASHRAE1791TullieCircle,NEAtlanta,GA30329www.ashrae.orgAllrightsreserved.ASHRAEisaregisteredtrademarkintheU.S.PatentandTrademarkOffice,ownedbytheAmericanSocietyofHeat-ing,RefrigeratingandAir-ConditioningEngineers,Inc.ASHRAEhascompiledthispublicationwithcare,butASHRAEhasnotinvestigated,andASHRAEexpresslydis-claimsanydutytoinvestigate,anyproduct,service,process,procedure,design,orthelikethatmaybedescribedherein.Theappearanceofanytechnicaldataoreditorialmaterialinthispublicationdoesnotconstituteendorsement,warranty,orguarantybyASHRAEofanyproduct,service,process,procedure,design,orthelike.ASHRAEdoesnotwarrantthattheinformationinthepublicationisfreeoferrors,andASHRAEdoesnotnecessarilyagreewithanystatementoropinioninthispublication.Theentireriskoftheuseofanyinformationinthispublicationisassumedbytheuser.NopartofthispublicationmaybereproducedwithoutpermissioninwritingfromASHRAE,exceptbyareviewerwhomayquotebriefpassagesorreproduceillustrationsinareviewwithappropriatecredit,normayanypartofthispublicationbereproduced,storedinaretrievalsystem,ortransmittedinanywayorbyanymeans—electronic,pho-tocopying,recording,orother—withoutpermissioninwritingfromASHRAE.Requestsforpermissionshouldbesubmittedatwww.ashrae.org/permissions.LibraryofCongressCataloginginPublicationControlNumber:2018011558ASHRAESTAFFSPECIALPUBLICATIONSMarkS.Owen,Editor/GroupManagerofHandbookandSpecialPublicationsCindySheffieldMichaels,ManagingEditorJamesMadisonWalker,ManagingEditorofStandardsLaurenRamsdell,AssistantEditorMaryBolton,EditorialAssistantMichshellPhillips,EditorialCoordinatorPUBLISHINGSERVICESDavidSoltis,GroupManagerofPublishingServicesJayneJackson,PublicationTrafficAdministratorPUBLISHERW.StephenComstockContentsIntroduction............................................1PurposeandScope......................................3RelatedWorkbyOtherOrganizations........................5LawsandRegulations.........................
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