Designation:D8386−21StandardTestMethodforDeterminingEnhancedFilterBlockingTendency(EFBT)1ThisstandardisissuedunderthefixeddesignationD8386;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethodisbasedonTestMethodD2068andusesafiltermediawhichismoresensitivetoblockingbycontaminantsinfuelsthanthefilterspecifiedinTestMethodD2068ProcedureAandB.Theresultofthistestmethodisdependentonthemandatedfiltermaterial,aswellastheproceduralstepsofthismethod.IfaspecificationrequiresaspecificDxxxxprocedure,donotsubstituteadifferentprocedureorfilterwithoutagreementfromthespecifier.1.Scope1.1Thistestmethodcoversaprocedureforthedetermina-tionoftheEnhancedFilterBlockingTendency(EFBT)andthefilterabilityofmiddledistillatefueloils.Thistestisapplicabletofuelswithintheviscosityrangeof1.3mm2/sto6.0mm2/sat40°C.NOTE1—ASTMspecificationfuelsfallingwithinthescopeofthistestmethodare:SpecificationD396GradesNo1and2;SpecificationD975GradesNo.1-DS15andS500,andNo.2-DS15andS500;SpecificationD2880GradesNo.1-GTandNo.2-GT.1.2Thistestmethodhasinterimrepeatabilityonly.Formoreinformation,seeSection12.1.3Thistestmethodisnotapplicabletofuelsthatcontainfree(undissolved)water(see7.3).1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnic...
