Designation:D4513−11(Reapproved2017)StandardTestMethodforParticleSizeDistributionofCatalyticMaterialsbySieving1ThisstandardisissuedunderthefixeddesignationD4513;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofparticlesizedistributionofcatalyticpowdermaterialusingasievinginstrumentandisoneofseveralfoundvaluableforthemeasurementofparticlesize.Thistestmethodisparticularlysuitableforparticlesinthe20to420-µmrange.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.2.1Exception—In5.2,meshsizeisthestandardunitofmeasure.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E11SpecificationforWovenWireTestSieveClothandTestSievesE161SpecificationforPrecisionElectroformedSievesE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE456TerminologyRelatingtoQualityandStatistics3.SummaryofTestMethod3.1A50%relativehumidity-equilibratedsampleofknownweightisallowedtofractionateonaseriesofvarioussizesievestoallowthevariousparticlesizestobecollectedonsuccessivelysmallersieveopenings.3.2Thesamplefractioncollectedoneachsieveoftheseriesisweighedanditsfractionalpartoftheoriginalsampleisdetermined.4.SignificanceandUse4.1Thistestmethodcanbeusedtodetermineparticlesizedistributionsofcatalystsandsupportsformaterialsspecifications,manufacturingcontrol,andresearchanddevel-opmentwork.5.Apparatus5.1LaboratorySievingInstrument,automaticwithtimerpreferred.5.2U.S.StandardSieves,orequivalent,toincludemicrome-tres(mesh)425(40),250(60),177(80),149(100),105(140),74...
