Designation:D716−86(Reapproved2019)StandardTestMethodsforEvaluatingMicaPigment1ThisstandardisissuedunderthefixeddesignationD716;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscovertheevaluationofmicapig-ment.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcernsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafety,health,andenvironmentalpracticesanddeterminetheappli-cabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D185TestMethodsforCoarseParticlesinPigmentsD280TestMethodsforHygroscopicMoisture(andOtherMatterVolatileUndertheTestConditions)inPigmentsE11SpecificationforWovenWireTestSieveClothandTestSieves3.SignificanceandUse3.1Thesetestmethodsareusedtodetermineapparentdensityofmicapigmentsandthegritlevel.Thisinformationissignificanttotheuserofmicapigmentsforinclusionincoatings.APPARENTDENSITY4.Apparatus4.1Volumeter—AScottvolumeterorsimilarapparatusmodifiedasfollows:ThescreenusedshallconformtotherequirementsofaNo.40(425-µm)sieveasprescribedinSpecificationE11.Thefunnelbelowthescreenshallbereplacedbyaconicalfunnelhavingabottomopening25mm(1in.)indiameter.Itmaybefoundnecessarytoreplacethetopglassbafflewithonethatislongertoensurethatallofthesiftedmicaiscaught.5.Procedure5.1Transferconvenientquantitiesofthemicapigmenttothefunnelofthemodifiedvolumeterandbrushthepigmentthroughthesc...
