Designation:D6807−17StandardTestMethodforOperatingPerformanceofContinuousElectrodeionizationSystemsonReverseOsmosisPermeatesfrom2to100µS/cm1ThisstandardisissuedunderthefixeddesignationD6807;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationoftheoper-atingcharacteristicsofcontinuouselectrodeionization(CEDI)devices,indicativeofdeionizationperformancewhenadeviceisappliedtoproductionofhighlydeionizedwaterfromtheproductwaterofareverseosmosissystem.Thistestmethodisaprocedureapplicabletofeedwaterscontainingcarbonicacidordissolvedsilica,orboth,andothersolutes,withaconduc-tivityrangeofapproximately2to100microsiemens-cm-1.1.2ThistestmethodcoversthedeterminationofoperatingcharacteristicsunderstandardtestconditionsofCEDIdeviceswheretheelectricallyactivetransfermediathereinispredomi-nantlyregenerated.1.3Thistestmethodisnotnecessarilyindicativeof:1.3.1Longtermperformanceonfeedwaterscontainingfoulantsorsparinglysolublesolutes,orboth;1.3.2Performanceonfeedsofbrackishwater,seawater,orotherhighsalinityfeeds;1.3.3Performanceonsyntheticindustrialfeedsolutions,pharmaceuticals,orprocesssolutionsoffoodsandbeverages;or1.3.4Performanceonfeedwaterslessthan2µS/cm,par-ticularlyperformancerelatingtoorganicsolutes,colloidalorparticulatematter,orbiologicalormicrobialmatter.1.4Thistestmethod,subjecttothelimitationsdescribed,canbeappliedaseitheranaidtopredictexpecteddeionizationperformanceforagivenfeedwaterquality,orasamethodtodeterminewhetherperformanceofagivendevicehaschangedoversomeperiodoftime.Itisultimately,however,theuser’sresponsibilitytoensurethevalidityofthistestmethodfortheirspecificapplications.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddre...
