Designation:D3375−18StandardTestMethodforColumnCapacityofParticulateMixedBedIonExchangeMaterials1ThisstandardisissuedunderthefixeddesignationD3375;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheperfor-manceofparticulatemixedbedionexchangematerialsintheregeneratedformwhenusedfordeionization.Itisintendedforuseintestingunusedmixedbedmaterialsandsamplesofregeneratedmixedbedsfromoperatingunits.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinforma-tiononlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1125TestMethodsforElectricalConductivityandResis-tivityofWaterD1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD1293TestMethodsforpHofWaterD1782TestMethodsforOperatingPerformanceofParticu-lateCation-ExchangeMaterialsD2687PracticesforSamplingParticulateIon-ExchangeMa-terials3.Terminology3.1Definitions—Fordefinitionsoftermsrelatedtowater,refertoTerminologyD1129.4.SummaryofTestMethod4.1Thistestmethodconsistsofexhaustingacolumnofregeneratedmixedbedionexchangematerialtoaspecificendpointwithaninfluentsolutionofknowncompositionandvolume.5.SignificanceandUse5.1T...
