Designation:D7977−19StandardTestMethodsforPolymerContentofAMS(α-Methylstyrene)1ThisstandardisissuedunderthefixeddesignationD7977;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofthepoly-mercontentofAMS(α-Methystyrene).Dimersandtrimersarenotmeasuredbythesetestmethods.1.2Thistestmethodhasbeenfoundapplicabletodetermin-ingthepolymercontentofAMSinconcentrationsupto15mg/kgwithanLOQof0.6mg/kgandanLODof0.2mg/kg.Samplescontainingmorethan15mg/kgofpolymermustbesuitablydilutedbeforemeasurement.1.3Indeterminingtheconformanceofthetestresultsusingthismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodofPracticeE29.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection8.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3437PracticeforSamplingandHandlingLiquidCyclicProductsD6367SpecificationforAMS(α-Methylstyrene)D6809GuideforQualityControlandQualityAssuranceProceduresforAromaticHydrocarbonsandRelatedMa-terialsE29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecificationsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMet...
