Designation:D1210−05(Reapproved2022)StandardTestMethodforFinenessofDispersionofPigment-VehicleSystemsbyHegman-TypeGage1ThisstandardisissuedunderthefixeddesignationD1210;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversmeasurementofthedegreeofdispersion(commonlyreferredtoas“finenessofgrind”)ofthepigmentinapigment-vehiclesystemsuchasliquidcoatingsandtheirintermediates.Itmayalsobeusedtoassesstheinclusionofparticulatesbyacleanliness(ortexture)rating.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1316TestMethodforFinenessofGrindofPrintingInksBytheNPIRIGrindometer3.SummaryofTestMethod3.1TaperedGage—Theproductisspreadbymeansofascraperinamachinedtaperedpath.Atsomepointinthispath,particlesoragglomerates,orboth,willbecomevisible.Adirectreadingfromthegraduatedscaleisthenmadeatthepointwheretheparticlesformadefinitepattern.Whenthesinglepathgageisuseditisalsopossibletorate“cleanliness”(see6.2).3.2SteppedGage—Theproductisspreadbymeansofascraperonasteppedgage.Thereare2delimitedsectionsonthisgage,eachof6.5cm2(1in.2)area,andoftwodifferentdept...
