Designation:D3907/D3907M−19StandardTestMethodforTestingFluidCatalyticCracking(FCC)CatalystsbyMicroactivityTest1ThisstandardisissuedunderthefixeddesignationD3907/D3907M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversdeterminingtheactivityofequilibriumorlaboratory-deactivatedfluidcatalyticcracking(FCC)catalysts,orboth.Thisisevaluatedonthebasisofmasspercentconversionofgasoilfeedinamicroactivityunit.TheselectivityofFCCcatalystscanbedeterminedusingTestMethodD5154.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotnecessarilyexactequivalents;therefore,toensureconformancewiththestandard,eachsystemshallbeusedindependentlyoftheother,andvaluesfromthetwosystemsshallnotbecombined.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D2887TestMethodforBoilingRangeDistributionofPe-troleumFractionsbyGasChromatographyD5154TestMethodforDeterminingActivityandSelectivityofFluidCatalyticCracking(FCC)CatalystsbyMicroac-tivityTestE105PracticeforProbabilitySamplingofMaterialsE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE456TerminologyRelatingtoQualityandStatisticsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Ter...
