Designation:D4678−15aStandardPracticeforRubber—Preparation,Testing,Acceptance,Documentation,andUseofReferenceMaterials1ThisstandardisissuedunderthefixeddesignationD4678;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversmaterialsusedonanindustry-widebasisasreferencematerials,whicharevitallyimportanttoconductproduct,specification,anddevelopmenttestingintherubberindustry.Thispracticedescribesthestepsnecessarytoensurethatanycandidatematerial,thathasaperceivedneed,canbecomeaReferenceMaterial.Thepracticesetsforththerecommendationsonthepreparationstepsforthesematerials,onthetestingthatshallbeconductedtopermitacceptanceofanycandidatematerial,andonhowthedocumentationneededfortheacceptanceshallberecordedforfutureuseandreview.1.2ThispracticeshallbeadministeredbyASTMCommit-teeD11.1.2.1Importantsectionsofthispracticeareasfollows:SectionSignificanceandUse3PreparationofIndustryReferenceMaterials4OverviewofIndustryReferenceMaterialTesting5ChemicalandPhysicalSpecificationsforIRM6ReferenceMaterialDocumentation7TypicalReferenceMaterialUse8RecommendedPackageSizeforIRMAnnexA1RecommendedSamplingPlansforHomogeneityTestingofanIRMAnnexA2TestPlanandAnalysisforHomogeneityofanIRMAnnexA3TestPlanandAnalysistoEvaluateanAcceptedReferenceValueAnnexA4StatisticalModel(s)forIRMTestingAnnexA5ExampleofAnnexCalculationsforaTypicalIRMAppendixX1Two-WayAnalysisofVarianceforCalculatingSrAppendixX21.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustr...
