Designation:D6578/D6578M−13StandardPracticeforDeterminationofGraffitiResistance1ThisstandardisissuedunderthefixeddesignationD6578/D6578M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversabasicmethodforevaluatinggraffitiresistanceofcoatings,anduseofthispracticetoevaluategraffitiresistanceofcoatingsafteroutdoororlabora-toryacceleratedexposure(eitherpriortooraftergraffitiisapplied).Graffitiresistanceisbasedonhowadefinedsetofmarkingsisremovedbyadefinedsetofcleaningagents.1.2Thispracticealsodefinesprocedures(optional)toevaluategraffitiremovalafterre-markingwithsubsequentre-cleaning.Itdoesnotaddressrecoatabilityafteracoatingisnolongergraffitiresistant.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D523TestMethodforSpecularGlossD4587PracticeforFluorescentUV-CondensationExpo-suresofPaintandRelatedCoatingsD6695PracticeforXenon-ArcExposuresofPaintandRelatedCoatingsE1347TestMethodforColorandColor-DifferenceMea-surementbyTristimulusColorimetryE1349TestMethodforReflectanceFactorandColorbySpectrophotometryUsingBidirectional(45°:0°or0°:45°)GeometryG7PracticeforAtmosphericEnvironmentalExposureTest-ingofNonmetallicMaterialsG113TerminologyRelatingtoNaturalandArtificialWeath-eringTestsofNonmetallicMaterials3.Terminology3.1ThedefinitionsgiveninTerminology...
