Designation:D6789–02StandardTestMethodforAcceleratedLightAgingofPrintingandWritingPaperbyXenon-ArcExposureApparatus1ThisstandardisissuedunderthefixeddesignationD6789;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesalaboratoryprocedurefortheexposureofprintingandwritingpapertoxenon-arclightatelevatedlevelsoflightfluxtopermitacceleratedagingofthattypeofpaper.1.2Thistestmethodspecifiesthesamplepreparationandconditionsofexposurerequiredtoobtaininformationontherelativestabilityofpaperwithregardtochangeinopticalpropertiesbroughtaboutbyexposureofsuchpapertolight.1.3Thistestmethodprovidesqualitativeresultsregardingpaperstabilityanddoesnotdefinethelifeexpectancyforagivenpapertoreachaspecifiedsetofopticalproperties.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D685PracticeforConditioningPaperandPaperProductsforTesting2D985TestMethodforBrightnessofPulp,Paper,andPaperboard(DirectionalReflectanceat457nm)2D1968TerminologyRelatingtoPaperandPaperProducts2G113TerminologyRelatingtoNaturalandArtificialWeatheringTestsofNonmetallicMaterials3G151PracticeforExposingNonmetallicMaterialsinAc-celeratedTestDevicesthatUseLaboratoryLightSources3G155PracticeforOperatingXenonArcLightApparatusforExposureofNonmetallicMaterials32.2TAPPITestMethods:T254CupriethylenediamineDisperseViscosityofPulp(FallingBallMethod)4T524ColorofPaperandPaperboard(45°/0°Geometry)4T1206PrecisionStatementforTestMethods43.Terminology3.1Definitions—DefinitionsshallbeinaccordancewithTerminologyD1968orTerminologyG113.Fortermsusedinthisspecificationwhichar...
