Designation:D1505−10StandardTestMethodforDensityofPlasticsbytheDensity-GradientTechnique1ThisstandardisissuedunderthefixeddesignationD1505;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofthedensityofsolidplastics.1.2Thistestmethodisbasedonobservingtheleveltowhichatestspecimensinksinaliquidcolumnexhibitingadensitygradient,incomparisonwithstandardsofknowndensity.NOTE1—ThistestmethodisequivalenttoISO1183-2.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD2839PracticeforUseofaMeltIndexStrandforDeter-miningDensityofPolyethyleneD4703PracticeforCompressionMoldingThermoplasticMaterialsintoTestSpecimens,Plaques,orSheetsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod2.2ISOStandard:ISO1183-2MethodsforDeterminingtheDensityandRelativeDensityofNoncellularPlastics33.Terminology3.1RefertoTerminologyD883fordefinitionsofothertermsrelatingtothistestmethod.3.2Definitions:3.2.1densityofplastics—theweightperunitvolumeofmaterialat23°C,expressedasfollows:D23C,g/cm3(1)NOTE2—Densityistobedistinguishedfromspecificgravity,whichistheratiooftheweightofagivenvolumeofthematerialtothatofanequalvolumeofwateratastatedtemperature.4.SignificanceandUse4.1Thedensityofasolidisaconvenientlymeasurablepropertywhichisfrequentlyusefulasameansoffollowingphysicalchangesinasample,asanindicationofuniformityamongsamples,andameansofi...
