Designation:D5068−04(Reapproved2019)StandardPracticeforPreparationofPaintBrushesforEvaluation1ThisstandardisissuedunderthefixeddesignationD5068;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribesthepreparationofpaintbrushesforevaluation.1.2Thispracticeisapplicabletopaintbrushes50to100mm(2to4in.)inwidth.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3924SpecificationforStandardEnvironmentforCondi-tioningandTestingPaint,Varnish,Lacquer,andRelatedMaterials(Withdrawn2016)3D5301PracticeforPhysicalCharacterizationofPaintBrushes3.SummaryofPractice3.1Usingapaintchosenfortheevaluation,thebrushtobetestedisrepeatedlyloadedwithpaintandbrushedoveraspecifiedareainaspecifiedapplicationtime.4.SignificanceandUse4.1Untilthepaintbrushisfullyconditionedandwettedwithpaint,onlypartofthepaintloadedontothebrushcanbetransferredtothesurfacebeingpainted.Byproperlypreparingthebrushbeforeuse,theamountofpaintdeliveredtothesurfacecanbemademoreuniformandreflectrealuse.5.Apparatus5.1Container,toholdpaint,forexample,aquartcan.5.2TestBrush,50to100mm(2to4in.)inwidth.5.3Balance,toweighbrushtothenearest0.1gram.6.Materials6.1TestPaint.6.2Br...
