Designation:D3375−95a(Reapproved2007)StandardTestMethodforColumnCapacityofParticulateMixedBedIonExchangeMaterials1ThisstandardisissuedunderthefixeddesignationD3375;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheperfor-manceofparticulatemixedbedionexchangematerialsintheregeneratedformwhenusedfordeionization.Itisintendedforuseintestingunusedmixedbedmaterialsandsamplesofregeneratedmixedbedsfromoperatingunits.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1125TestMethodsforElectricalConductivityandResis-tivityofWaterD1129TerminologyRelatingtoWaterD1193SpecificationforReagentWaterD1293TestMethodsforpHofWaterD1782TestMethodsforOperatingPerformanceofParticu-lateCation-ExchangeMaterialsD2687PracticesforSamplingParticulateIon-ExchangeMa-terialsD2777PracticeforDeterminationofPrecisionandBiasofApplicableTestMethodsofCommitteeD19onWater3.Terminology3.1Definitions—Fordefinitionsoftermsrelatedtowater,refertoTerminologyD1129.4.SummaryofTestMethod4.1Thistestmethodconsistsofexhaustingacolumnofregeneratedmixedbedionexchangematerialtoaspecificendpointwithaninfluentsolutionofknowncompositionandvolume.5.SignificanceandUse5.1Thistestmethodcanbeusedtoevaluateunusedmixedbedionexchangematerialsforconformancetospecifications.Whenarepresentativesampleofthemixedbedcanbeobtainedfromanoperatingunit,thistestmethodcanbeusedtoevaluatetheregenerationefficiencybycomparisonwiththesamedataobtainedwithnewmaterialfromthesamemanu-facturedlots,orretainedsamplesofthein-placeproducts.5.2Thistestmethodprovidesfortheca...
