Designation:D3926−05(Reapproved2019)StandardTestMethodsforPercentSolidsinTitaniumDioxideSlurries1ThisstandardisissuedunderthefixeddesignationD3926;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthedeterminationoftheweightpercentofsolidsinaqueousslurriesoftitaniumdioxidepigmentsbyeithertheuseofagravity-convectionoven(MethodA),infraredradiationmoistureanalyzer(MethodB),oramicrowavedryingsystem(MethodC).1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisteststandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1193SpecificationforReagentWater3.SummaryofTestMethod3.1OvenMethod:3.1.1Slurryisweighedbydifferenceintoataredaluminumfoildish,driedat105°Cinanovenfor1h,cooledinadesiccator,andweighed.3.2InfraredMethod:3.2.1Slurryisdriedunderinfraredlampsforaspecifiedtimeandtemperature.Theresultsareobtaineddirectlyformtheunit’sdisplaypanel.3.3MicrowaveMethod:3.3.12to4gofslurryisplacedbetweentwoglassfiberpadsanddriedinamicrowavedryingsystem.Theresultsareobtaineddirectlyformtheunit’sdisplaypanel.4.SignificanceandUse4.1Thesetestmethodsareintendedasaquickandreliableprocedureformeasuringthetitaniumdioxidepigmentcontentofaqueousslurries.Includedwiththepigmentcontentintheper...
