Designation:D792−20StandardTestMethodsforDensityandSpecificGravity(RelativeDensity)ofPlasticsbyDisplacement1ThisstandardisissuedunderthefixeddesignationD792;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thesetestmethodsdescribethedeterminationofthespecificgravity(relativedensity)anddensityofsolidplasticsinformssuchassheets,rods,tubes,ormoldeditems.1.2Twotestmethodsaredescribed:1.2.1TestMethodA—Fortestingsolidplasticsinwater,and1.2.2TestMethodB—Fortestingsolidplasticsinliquidsotherthanwater.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Warning—Mercuryhasbeendesignatedbymanyregu-latoryagenciesasahazardoussubstancethatcancauseseriousmedicalissues.Mercury,oritsvapor,hasbeendemonstratedtobehazardoustohealthandcorrosivetomaterials.Usecautionwhenhandlingmercuryandmercury-containingproducts.SeetheapplicableproductSafetyDataSheet(SDS)foradditionalinformation.Thepotentialexiststhatsellingmercuryormercury-containingproducts,orboth,isprohibitedbylocalornationallaw.Usersmustdeterminelegalityofsalesintheirlocation.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.NOTE1—ThisstandardisnotequivalenttoISO1183–1MethodA.Thistestmethodprovidesmoreguidelinesonsampleweightanddimension.ISO1183-1allowstestingatanadditionaltemperatureof2762°C.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrgan...
