Designation:D4828−94(Reapproved2020)StandardTestMethodsforPracticalWashabilityofOrganicCoatings1ThisstandardisissuedunderthefixeddesignationD4828;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthedeterminationoftherelativeeaseofremovalofcommonsoilandstainsfrominteriorcoatingsbymanualormechanicalwashingwithaspongeandaliquidorpowdercleanser.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWaterD3450TestMethodforWashabilityPropertiesofInteriorArchitecturalCoatingsD3924SpecificationforStandardEnvironmentforCondi-tioningandTestingPaint,Varnish,Lacquer,andRelatedMaterials3.SummaryofTestMethod3.1Thetestmaterialisappliedtoaplasticpanelandallowedtodryfor7daysorasmutuallyagreed.Soilantsorstains,orboth,areappliedtothefilm.Thefilmiswashedforupto100cyclesusingaspongeandaliquidorpowdercleanser.Afterrinsinganddrying,thepanelisevaluatedforthedegreeofsoilorstainremoval,erosion,andanychangeingloss/sheenorcolorbetweenthewashedandunwashedarea.4.SignificanceandUse4.1Interiorarchitecturalpaintsaresubjectedinusetosoilingbydirtorotherstains.Thistestmethodprovidesawaytoassessrelativeeaseofsoilorsta...
