美国CHEMetricsK-3902型DEHA测试盒用于测试水中DEHA含量。例如：锅炉给水和冷凝水。规格参数：产品类型DEHA—CHEMets®VisualKit产品型号K-3902测试范围0-400&400-3000ppb测试目盛0,30,60,100,150,200,300,400&400,600,800,1000,1200,1600,2000,2500,3000ppb检测下限15ppb测试时间10分钟测试方法PDTS测试次数30次/盒标准配置1盒填充盒、1支低浓度DEHA比色筒、1块高浓度DEHA比色板、1瓶活化剂溶液、1个25mL样品杯、1份说明书产品价格咨询上海益朗仪器有限公司CHEMets®是美国CHEMetrics的专利（专利号：3,634,038）。美国CHEMetricsDEHA测试盒VisualKits测试范围MDL测试方法测试盒货号填充盒货号0-400&400-3000ppb15ppbPDTSK-3902R-390225-250ppm25ppmCericSulfateTitrantwithFerroinIndicatorK-3925InstrumentalKits测试范围测试方法测试盒目录0-2.00ppmPDTSK-3903MethodsDissolvedoxygeninboilersystemwatercausescorrosionandpittingofmetalsurfaces,whichcanleadtoboilerinefficiency,equipmentfailure,andsystemdowntime.DEHA(N,N-Diethylhydroxylamine)isaddedtoboilersystemwaterasanoxygensc***engertokeepthedissolvedoxygenlevelsaslowaspossible.ThePDTSMethodReference:G.Frederick***ithChemicalCo.,TheIronReagents,3rded.,p.47(1980).ThetestkitsemploythePDTSchemistry,inwhichDEHAreducesironIII(ferricstate)toironII(ferrousstate),whichreadilyreactswithPDTS(3-(2-pyridyl)-5,6-bis(4-phenylsulfonicacid)-1,2,4-triazinedisodiumsalt)toformapink-purplecoloredcomplexindirectproportiontotheDEHAconcentration.Testresultsareexpressedinppb(ug/L)orppm(mg/L)DEHA.TheCericSulfateTitrimetricMethodReference:DevelopedbyCHEMetrics,Inc.CHEMetricsdevelopedatitrimetricmethodthatemploysacericsulfatetitrantandferroinendpointindicator.DEHAreducesferricirontotheferrousstate,andtheresultingferrousironistitratedwiththecericsulfatetitrant.Testresultsareexpressedinppm(mg/L)DEHA.)