Designation:D7834−13(Reapproved2019)StandardTestMethodforFillingMaterialSheddingofPaintBrushes1ThisstandardisissuedunderthefixeddesignationD7834;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribestheprocedurefortestingthesheddingpropertiesofbothnaturalbristleandsyntheticfilamentpaintbrushes(referredasfillingmaterial).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SummaryofTestMethod2.1Theamountoffillingmaterialremovedinthistestmethodiscalculatedtodeterminethesheddingcharacteristicofthetestsample.3.SignificanceandUse3.1Duringtheapplicationofcoatings,paintbrushescanexhibitsheddingoffillingmaterialontothecoatedsurface.Ameasureofthissheddingfillingmaterialwilldeterminethepaintbrush’sabilitytoresistsheddingduringapplication.4.Equipment4.1StandardLargeBrushMakingComb,typicallywithawoodhandleandsteelteeth(seeFig.1).Teethapproximately.88in.(22.2mm)long;teethportionofcombapproximately36teethat4.14in.(105.1mm),resultingin.15in.(2.9mm)toothspacing;toothdiameterapproximately.048in.(1.2mm);4.75in.(120.7mm)comblength-outfromhandle.4.2StandardWhitePaper,8.5by11in.(215.9by27...
