氯离子分析仪（氯离子仪器）

1、氯离子分析仪

技术参数

Model926Model926S

样品量500microlitres20microlitres

分析范围:10-999mgCl/l;2-165mg%Salt10-299mmolCl/l

分析时间:35sec@200mgl/l35sec@100mmolCl/l

准确度:SD<1%@0.1%ClStdSolution+-2%@NQCS100mmol/l

线性:1%inrange10-999mgCl/l1%10-299mmolCl/l

重现性:CVfor20replicates

<1.5%@200mgCl/l<1.5%@100mmolCl/l

REAGENTSYSTEM

TheSherwoodBuffersystemisoptimisedtoeliminateinterferingionsandincorporatesaspecialdispersanttoensurereproducibleformationofthesilverchlorideprecipitateandenhanceanalyticalperformance.

主要特点

使用方便,自动化操作.

很高的灵敏度.

很高的选择性.

Thecoulometricmethodisveryrobustandversatile

oTheSherwoodmicroprocessorbasedInstrumentisergonomicallydesignedandeasytouseandmaintain

oTheSherwoodBufferSystemspecificallydesignedforthemodel926givesoutstandingsensitivityandselectivity

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仪器介绍[下载样本]

KEYAPPLICATIONAREAS

ThemeasurementofSalt(SodiumChloride)concentrationintheFoodandDairyIndustryisuniversal.TheabilitytoreaddirectinSaltconcentrationmakestheSHERWOODModel926theinstrumentofchoiceformanufacturersandfoodanalystsaroundtheworld.

SaltandsalinityalsorepresentsseriouscontaminationinIndustrialprocessesandthesensitivityofthecoulometricmethodenablesmeasurementintheppmrangeinboilerfeedwater,polymerwashes.boreholeslurries,aswellassoilsanalysisandothers.The926hasprovenitselftobethemethodofchoiceformanydesalinationstudiesandgeneralqualitycontrolofsamplelines.

Clinicalmeasurementofthechlorideionisessentialformonitoringofelectrolytebalanceofpatientsasitplays,incombinationwithsodiumandpotassium,animportantpartinmaintainingwaterbalancebetweencells,plasmaandinterstitialfluid.TheModel926sisalsowidelyusedintheconfirmationofthediagnosisofCysticFibrosis.Themodel926Svariantcanaccept20microlitresamples.

SherwoodScientifichasmethodnotesfortheseandotherApplications.PharmaceuticalProduction,CementManufacture,PhotographyVeterinary.

PRINCIPLESOFMETHOD

Themaindifficultieswiththeclassicmethodwerethatsilvernitratereagentwouldchangeonstorageduetoaphotochemicalreactionandthatthetitrationendpointisvisuallyweak.Thereagentwouldhavetobestandardizedrequiringahighlyskilledanalyticaltechnician

The926methodisbasedonacoulometrictitrationandisanabsolutemethodwherethereagent,thesilverions,ispreciselyandquantitativelygeneratedatthetimeoftheanalysisbypassingaconstantcurrentbetweendonorelectrodes.Theendpointisdetectedbytheuseofsensingelectrodeswhichmeasurethechangeinsolutionconductivitywhichoccurswhenexcesssilverionsarepresentinsolution.