Designation:D6849−13(Reapproved2021)StandardPracticeforStorageandUseofLiquefiedPetroleumGases(LPG)inSampleCylindersforLPGTestMethods1ThisstandardisissuedunderthefixeddesignationD6849;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThispracticecoversinformationforthestorageanduseofLPGsamplesinstandardcylindersofthetypeusedinsamplingmethod,PracticeD1265andfloatingpistoncylindersusedinsamplingmethod,PracticeD3700.1.2ThispracticeisespeciallyapplicablewhentheLPGsampleisusedasaqualitycontrol(QC)referencematerialforLPGtestmethods,suchasgaschromatography(GC)analysis(TestMethodD2163)orvaporpressure(TestMethodD6897)thatuseonlyafewmLpertest,sincerelativelysmallportableDepartmentofTransportation(DOT)cylinders(forexample,20lbcommonbarbecuecylinders)canbeused.Thispracticecanbeappliedtoothertestmethods.However,testmethodsthatrequirealargeamountofsamplepertest(forexample,manualvaporpressureTestMethodD1267)willrequireQCvolumesinexcessof1000LifstoredinstandardDOTcylindersorAmericanSocietyofMechanicalEngineers(ASME)vessels.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1265PracticeforSamplingLiquefiedPetroleum(LP)Gases,ManualMethodD1267TestMethodforGaugeVaporPressureofLiquefiedPetroleum(LP)Gases(LP-GasMethod)D2163TestMethodforDeterminationofHydrocarbonsinLiquefiedPetroleum(LP)GasesandPropane/PropeneMixturesbyGasChromatographyD3700PracticeforObtainingLPGSamplesUsingaFloat-ingPistonCylinderD6299PracticeforApplyingStatisticalQualityAssuranceandControlChartingTechniquestoEvaluateAnalyticalMeasurem...
