Designation:D3975−93(Reapproved2014)StandardPracticeforDevelopmentandUse(Preparation)ofSamplesforCollaborativeTestingofMethodsforAnalysisofSediments1ThisstandardisissuedunderthefixeddesignationD3975;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeestablishesuniformgeneralproceduresforthedevelopment,(preparation)anduseofsamplesinthecollaborativetestingofmethodsforchemicalanalysisofsedimentsandsimilarmaterials.1.2Theprinciplesofthispracticeareapplicabletoaqueoussampleswithsuitabletechnicalmodifications.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D596GuideforReportingResultsofAnalysisofWaterD1129TerminologyRelatingtoWaterD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWaterD3670GuideforDeterminationofPrecisionandBiasofMethodsofCommitteeD22D3976PracticeforPreparationofSedimentSamplesforChemicalAnalysisE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions—Fordefinitionoftermsusedinthispractice,refertoTerminologyD1129.4.SummaryofPractice4.1Testsamplesofadequatelydefinedcompositionandhomogeneityarerequiredforevaluatingtheprecisionandbiasoftestmethods.Thesesamplesshouldbetypicalinallrespectstothesampleforwhichthetestmethodisapplicable.Sampleswiththreelevelsofconcentrationofthemeasurandarerecommendedtoevaluatethelinearityofthetestmethod.Acceptabletestmaterials,inorderofpreferenceare:threesamplesofdifferentcompositions;mixturesoftwosamplestoobtainthedesiredconcentrationlevels;samplespreparedbydilutionofasinglesample.4....
