Designation:D750−12(Reapproved2021)StandardPracticeforRubberDeteriorationUsingArtificialWeatheringApparatus1ThisstandardisissuedunderthefixeddesignationD750;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1ThispracticecoversspecificvariationsinthetestconditionsandproceduresthatshallbeapplicablewhenPracticeG151pluseitherPracticeG152,G153,G154,orG155areemployedforexposureofvulcanizedrubbercompounds.Italsocoversthepreparationoftestspecimensandtheevaluationofresults.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D412TestMethodsforVulcanizedRubberandThermoplas-ticElastomers—TensionD3182PracticeforRubber—Materials,Equipment,andPro-ceduresforMixingStandardCompoundsandPreparingStandardVulcanizedSheetsD3183PracticeforRubber—PreparationofPiecesforTestPurposesfromProductsD4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustriesG151PracticeforExposingNonmetallicMaterialsinAccel-eratedTestDevicesthatUseLaboratoryLightSourcesG152PracticeforOperatingOpenFlameCarbonArcLightApparatusforExposureofNonmetallicMaterialsG153P...
