Designation:D8277−20StandardTestMethodforWetFilterabilityofLubricantsandHydraulicFluidsbyMassFlowTechnique1ThisstandardisissuedunderthefixeddesignationD8277;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversdeterminationofthewetfilter-abilityoflubricantsandhydraulicfluidsbaseduponmassflowratemeasurementsthrougha0.8µmmembraneafterageingofthefluidinthepresenceofwater.TheprocedureappliestolubricantsandhydraulicfluidsthatareformulatedwithAmeri-canPetroleumInstitute(API)GroupI,II,III,IVandcertainVbasestocks.Productsformulatedwithwaterorbasestocksthatareheavierthanwaterareoutofscope.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD1401TestMethodforWaterSeparabilityofPetroleumOilsandSyntheticFluidsD4057PracticeforManualSamplingofPetroleumandPetroleumProductsD6300PracticeforDeterminationofPrecisionandBiasDataforUseinTestMethodsforPetroleumProductsandLubricants2.2ISOStandards:3ISO13357Petroleumproducts–Determinationofthefilter-abilityoflubricatingoils–Part1:Procedureforoilsinthepresenceofwater3.Terminology3.1DefinitionsofTermsSpecifictoThisStandard:3.1.1filterability,n—theabili...
