Designation:D5959−12(Reapproved2017)StandardTestMethodforBulkDensityofLevelPaintbrushFilaments1ThisstandardisissuedunderthefixeddesignationD5959;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaprocedureformeasuringtheweightoffilamentsperunitvolume.1.2Thistestmethodisapplicableonlytomonofilamentwithconsistentlongitudinal(level)profiles.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.SummaryofTestMethod2.1Theweightandvolumeofabundleoffilamentsismeasured,andthebundledensityiscalculated.3.SignificanceandUse3.1Filamentsareavailableinavarietyofcrosssectionsandmaterials.Ameasureofbulkdensitypermitsthebrushmakertoestimatetheweightoffilamentrequiredtoprepareagivennumberofbrushes.4.Apparatus4.1Theapparatusrequiressomemachining,andisas-sembledasshowninFig.1fromthefollowingequipment:4.1.1AirValve24.1.2MiniatureAirCylinder,3dualacting,heavyduty.4.1.3AssortedpartsshowninFig.1aremachinedfrom304stainlesssteelandassembledasshownalongwiththeairvalveandcylinderjustdescribed.Thescalemustbefixedinplacesothatitreadsaccuratelythediametersofmetalstandardsthatare1.82in.(46.2mm)and2.06in.(52.3mm)diam...
