Designation:D2929−89(Reapproved2019)´1StandardTestMethodforSulfurContentofCellulosicMaterialsbyX-RayFluorescence1ThisstandardisissuedunderthefixeddesignationD2929;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Section6.3primarystandardnamewasupdatedinOctober2019.1.Scope1.1ThistestmethodcoversdeterminationofsulfurcontentofcellulosicmaterialsbyX-rayfluorescence.1.2Usingappropriatestandards,therangeoftheprocedureisfromapproximately10ppmto20%sulfur.1.3Thistestmethodisproposedspecificallyasanalterna-tivetoTestMethodsD871,sectionsonSignificanceandUse,Apparatus,Reagents,ProcedureandCalculationofHydroxylContent,andTestMethodsD817,sectionsonSummaryofTestMethod,SignificanceandUse,Apparatus,Reagents,andProcedureofHydroxylContent.Asappliedtocelluloseestersitmeasuresthecombinedsulfurandsulfurintheaccompany-inginorganicsalts.1.4Todeterminecombinedsulfur,thesample,whensoluble,mustfirstbereprecipitatedintodiluteacidtoremovethenoncombinedsulfurcompounds.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,see7.2.1.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D817TestMethodsofTestingCelluloseAcetatePropionateandCelluloseAcetateButyrateD871TestMethodsofTestingC...
