Designation:D6901−15StandardSpecificationforArtists’ColoredPencils1ThisstandardisissuedunderthefixeddesignationD6901;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationestablishesrequirementsforcomposition,performance,andlabelingofartists’coloredpencils.1.2Thisspecificationcoversvehiclesandadditives.Re-quirementsareincludedforidentification,lightfastness,andconsistency.1.3Coloredpencilspecimensareexposedtobothnaturaldaylightthroughwindowglassandsimulatedwindowglass-filtereddaylightradiationtodeterminethelightfastnessratingforeachpencil.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.2.ReferencedDocuments2.1ASTMStandards:2D2244PracticeforCalculationofColorTolerancesandColorDifferencesfromInstrumentallyMeasuredColorCoordinatesD4236PracticeforLabelingArtMaterialsforChronicHealthHazardsD4303TestMethodsforLightfastnessofColorantsUsedinArtists’MaterialsE284TerminologyofAppearanceG24PracticeforConductingExposurestoDaylightFilteredThroughGlassG113TerminologyRelatingtoNaturalandArtificialWeath-eringTestsofNonmetallicMaterialsG151PracticeforExposingNonmetallicMaterialsinAccel-eratedTestDevicesthatUseLaboratoryLightSourcesG155PracticeforOperatingXenonArcLightApparatusforExposureofNon-MetallicMaterials3.Terminology3.1Definitions—RefertoTerminologyE284forappearancetermsusedinthisspecificationandtoTerminologyG113fortermsrelatingtonaturalandartificiallightfastnesstests.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1bloom,n—acloudyexudationonthesurfaceofcoloredpencilduetowaxmigration.3.2.2burnish,v—tofirmlyrubthesurfaceofthesamplefollowingapplicationofthecoloredpenciluntilthebinderbreaksdownandthecolorisforcedintothetextureofthesubstratetoimprovecoverage.3.2.3coloredpencil,n—acoreofex...
