Designation:E1645−01(Reapproved2007)StandardPracticeforPreparationofDriedPaintSamplesbyHotplateorMicrowaveDigestionforSubsequentLeadAnalysis1ThisstandardisissuedunderthefixeddesignationE1645;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthesamplepreparationproceduresforpaintsamplesthatarecollectedduringtheassessment,managementorcontrolofleadhazards.1.2Thispracticedescribesthedigestionproceduresusingahotplateormicrowaveovenorapparatusforpaintsamplesthataretobeanalyzedforleadcontent.1.3Thispracticecoversthegeneralconsiderationsforquantitativesampleextractionfortotalrecoverableleadindriedpaintsamples(eitherbulkpaintorpaintpowder)usinghotplateormicrowaveheatingtechniques,orboth.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thispracticecontainsnotesthatareexplanatoryandnotpartofthemandatoryrequirementsofthestandard.1.6ThispracticeisbasedontwoNIOSHMethods,7082and7105,andonanEPAstandardoperatingprocedureforleadinpaint.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,see6.2.4.4and7.2.1.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterE1605TerminologyRelatingtoLeadinBuildingsE1729PracticeforFieldCollectionofDriedPaintSamplesforSubsequentLeadDetermination2.2OtherDocuments:EnvironmentalProtectionAgency,StandardOperatingPro-ceduresforLeadinPaintbyHotplate-orMicrowave-basedAcidDigestionsandAtomicAbsorptionorInduc-tivelyCoupledPlasmaEmissionSpectrometry;U.S.EPA,ResearchTrianglePark,NC(1991).3(NTISNo.PB92–114172)NIOSHManualofAnalyticalMethods,P.M.Eller...
