Designation:D279−02(Reapproved2019)StandardTestMethodsforBleedingofPigments1ThisstandardisissuedunderthefixeddesignationD279;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thesetestmethodscoverproceduresfordeterminingthebleedingcharacteristicsofdrypigmentsbydirectsolventextractionofthepigmentandbyoverstripingafilmwithawhitecoatingandobservingforthecolormigrationfromthebasecoatcontainingthepigment.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D2244PracticeforCalculationofColorTolerancesandColorDifferencesfromInstrumentallyMeasuredColorCoordinatesD2616TestMethodforEvaluationofVisualColorDiffer-enceWithaGrayScale3.SummaryofTestMethods3.1TestMethodA—Thepigmentisshakenwithtoluene,filtered,andthefiltrateobservedforcolor.3.2TestMethodB—Acoatingusingthepigmentundertestispreparedandappliedtoonehalfofapanel.Awhitefinishisappliedoverthedriedcoloredcoatingandextendedtotheuncoatedportionofthepanel.Thedriedoverstripecoatingisexaminedforcolormigrationfromthebasecoat.4.SignificanceandUse4.1TestMethodAdeterminestheamountofcolorproducedwhenthepigmentisindirectcont...
