Designation:D1622−20StandardTestMethodforApparentDensityofRigidCellularPlastics1ThisstandardisissuedunderthefixeddesignationD1622;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedensityofacellularplastic.Densitycanbeevaluatedastheapparentoveralldensity(includesformingskins)orbyapparentcoredensity(formingskinsremoved).1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinforma-tiononlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.NOTE1—ThistestmethodisequivalenttoISO845.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D618PracticeforConditioningPlasticsforTestingD883TerminologyRelatingtoPlasticsE456TerminologyRelatingtoQualityandStatisticsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE2935PracticeforConductingEquivalenceTestinginLaboratoryApplications2.2ISOStandard:ISO845Cellularplasticsandrubbers—Determinationofapparentdensity33.Terminology3.1TermsusedinthisstandardaredefinedinaccordancewithTerminologyD883,unlessotherwisespecified.Fortermsrelatingtoprecisionandbiasandassociatedissues,thetermsusedinthisstandardaredefinedinac...
