Designation:D6761−22StandardTestMethodforDeterminationoftheTotalPoreVolumeofCatalystsandCatalystCarriers1ThisstandardisissuedunderthefixeddesignationD6761;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthetotalporevolumeofcatalystsandcatalystcarriers,thatis,thevolumeofporeshavingporediameterbetweenapproximately14µmand0.4nm(4Å).1.2Units—ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Warning—Mercuryhasbeendesignatedbymanyregu-latoryagenciesasahazardousmaterialthatcancausecentralnervoussystem,kidney,andliverdamage.Mercury,oritsvapor,maybehazardoustohealthandcorrosivetomaterials.Cautionshouldbetakenwhenhandlingmercuryandmercurycontainingproducts.SeetheapplicableproductMaterialSafetyDataSheet(MSDS)fordetailsandEPA’swebsite—http://www.epa.gov/mercury/faq.htm—foradditionalinforma-tion.Usersshouldbeawarethatsellingmercuryormercurycontainingproducts,orboth,intoyourstateorcountrymaybeprohibitedbylaw.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection8.Warningstatementsaregivenin10.1.4,10.1.7,and10.1.11.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3766TerminologyRelatingtoCatalystsandCatalysisE177PracticeforUseoftheTermsPrecisionandBiasinAS...
