Designation:D7611/D7611M−21StandardPracticeforCodingPlasticManufacturedArticlesforResinIdentification1ThisstandardisissuedunderthefixeddesignationD7611/D7611M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticestipulatesthetypes,names,andsizesofCodesforthosematerialtypesspecifiedinTable1.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarelikelynottobeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combin-ingvaluesfromthetwosystemsislikelytoresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.NOTE1—ThereisnoknownISOequivalenttothisstandard.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3418TestMethodforTransitionTemperaturesandEn-thalpiesofFusionandCrystallizationofPolymersbyDifferentialScanningCalorimetryD4020SpecificationforUltra-High-Molecular-WeightPoly-ethyleneMoldingandExtrusionMaterials2.2ASTMAdjuncts:AdjuncttoD7611/D7611MStandardPracticeforCodingPlasticManufacturedArticlesforResinIdentification33.Terminology3.1Definitions:3.1.1ResinIdentificationCode(RICCode)—amolded,imprintedorraisedsymbolorwordingthatconsistsofanequilateraltriangle,aResinIdentificationNumber,andanAbbreviatedTermforpolymericmaterial.4.SignificanceandUse4.1ResinId...
