Designation:D2799−21StandardTestMethodforMicroscopicalDeterminationoftheMaceralCompositionofCoal1ThisstandardisissuedunderthefixeddesignationD2799;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoverstheequipmentandtechniquesusedfordeterminingthephysicalcompositionofacoalsampleintermsofvolumepercentoftheorganiccomponentsandofmineralmatter,ifdesired.1.2Thetermweightistemporarilyusedinthistestmethodbecauseofestablishedtradeusage.Thewordisusedtomeanbothforceandmassandcaremustbetakentodeterminewhichismeantineachcase(theSIunitforforceisnewtonandformass,kilogram).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D121TerminologyofCoalandCokeD388ClassificationofCoalsbyRankD2797PracticeforPreparingCoalSamplesforMicroscopi-calAnalysisbyReflectedLightD2798TestMethodforMicroscopicalDeterminationoftheVitriniteReflectanceofCoalD3174TestMethodforAshintheAnalysisSampleofCoalandCokefromCoalD4239TestMethodforSulfurintheAnalysisSampleofCoalandCokeUsingHigh-TemperatureTubeFurnaceCombustionE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE562TestMethodforDeterminingVolumeFractionbySystematicManualPointCountE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions—Ford...
