Designation:D7724−18´1StandardTestMethodforCarbonBlack—Non-DispersibleMatterbyMechanicalFlushing(NDM)1ThisstandardisissuedunderthefixeddesignationD7724;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—CorrectedSection11editoriallyinJanuary2020.1.Scope1.1Thistestmethodcoversthedeterminationofnon-dispersiblematteraftermechanicalwaterflushingofregularuntreatedcarbonblacks.Itmaynotbeapplicabletooil-treatedcarbonblacksbecausetheoilwouldpreventproperwettingoftheblackbywater.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1799PracticeforCarbonBlack—SamplingPackagedShipmentsD1900PracticeforCarbonBlack—SamplingBulkShip-mentsD4483PracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustriesE11SpecificationforWovenWireTestSieveClothandTestSieves3.SummaryofTestMethod3.1Asampleofcarbonblackismechanicallyflushedwithwaterthroughawire-meshscreenofaspecifiedsizeuntilallthatremainsisanon-dispersiblematterofcarbonblack.Thenon-dispersiblematterisdried,weighed,andtheamountofresidueisexpressedasmg/kg(ppm)oftheoriginalsample.4.SignificanceandUse4.1Thequantityofnon-dispersiblematterofcarbonblackisimportan...
