Designation:D893−14(Reapproved2018)StandardTestMethodforInsolublesinUsedLubricatingOils1ThisstandardisissuedunderthefixeddesignationD893;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofpentaneandtolueneinsolublesinusedlubricatingoils.1.2ProcedureAcoversthedeterminationofinsolubleswithouttheuseofcoagulantinthepentane.Itprovidesanindicationofthematerialsthatcanreadilybeseparatedfromtheoil-solventmixturesbycentrifuging.1.3ProcedureBcoversthedeterminationofinsolublesinoilscontainingdetergentsandemploysacoagulantforboththepentaneandtolueneinsolubles.InadditiontothematerialsseparatedbyusingProcedureA,thiscoagulationprocedureseparatessomefinelydividedmaterialsthatmaybesuspendedintheoil.NOTE1—ResultsobtainedbyProceduresAandBshouldnotbecomparedsincetheyusuallygivedifferentvalues.Thesameprocedureshouldbeemployedwhencomparingvaluesobtainedperiodicallyonanoilinuseorwhencomparingresultsdeterminedbytwoormorelaboratories.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeSection7and9.1.1.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193Specifi...
