Karl Fischer Titrator

www.ECH.de

aqua 40 .0 0

EXPERTS IN ANALYS S

Description

The basic module is the essential device for microcoulometric water determination according to Karl-Fischer-Titration in liquid samples and gases. This coulometric titration is based on the electrochemical generation of the iodine needed for the determi-nation. There is no need for any working with titer of KF-reagent and their adjustment. The optimized measuring cell allows very low background drift and short preconditioning times. Therefore the coulometric method can be used as a down to trace ppm-analysis.The sample to be analyzed is injected right into the measuring cell.

The titration current is adjusted automatically and continuously to the amount of water. Short measuring times are realized.

Measuring cells without diaphragm can be used. Many appli-cations do not require a diaphragm, so only one coulometric reagent is needed. All customary KF-reagents are suitable.

The basic module can be upgraded with additional modules available on request.

aqua 40 .0 0

Applications

Water determination according to Karl-Fischer-Titration in

• Solvents• Lyophilisates• Petro-chemicals• Biodiesel• Hydraulicoils/Mineraloils• Solidsvialiquidextraction

aqua 40.00 basic module - measurement

basic modul aqua 40.00

extensionmodules

Headspace module

•universalmoduleforallkindofsamples:solids,pasty substances and oils •designedforsamplesthatchangethewatercontentifin contact with ambient air•heatingprocedurewithfreelydefinabletemperatureor temperature programs•analysisofclosedsamplevialsforhygroscopicsamples

Heating module for oils and for solids:

•Gasextraction-theidealmethodtohandleoils,solidand pasty substances •heatingprocedurewithfreelydefinabletemperatureor temperature programs•withclosed-loopgascirculation,thedryingofcarriergas is no longer necessary•heatingmoduleofoilsisusedforoilvolumesupto20ml•heatingmoduleofsolidsisusedforverysmallsample amounts (below 10 µg)

High temperature oven module:

•thisovencanheatoutthesampleattemperaturesranging up to 1300 °C. •aspecialvalvesystemtransportsthesampleintotheoven without interrupting the carrier gas circulation.•Internaldryingofcarriergas

Gas sampling module:

•Thegas-samplingmoduleismountedonthebasicmodule and can be used for determination of water down to 1 ppm, e.g. in natural gas, industrial gas, biogas and pressurized gas•allowspreciseandreproducibledosingofgasvolumes into the measuring cell directly•portableversionorgassamplingmoduleforlaboratory

gas sampling module

Headspace module

Heating module for oils and for solids

Hightemperatureoven

• Infinitelyvariableelectrolysiscurrentforveryfastanalysis• Adjustmentoftitrationratetocurrentamountofwatertobetitrated• Lowbackgrounddrift• AllcustomaryKF-reagentsaresuitable• Easy-to-usesoftware• Definedmethodsformeasurement• Statusdisplaythroughlarge-scalecolouration• Addionalheatingmodulescanbeused

designedbyfive-senses.de

Measuringrange: 1µg - 100 mg, absoluteResolution: 0.1µgReproducibility: ± 3 µg bei 10 … 1000 µg, 3% bei > 1 mgGeneratorcurrent: infinitelyvariablefrom0upto 250mASamplevolume: 0.01–20ml(directinjection)Volumeofreagentinmeasuringcell: 100mlAnalysisduration: 5min(dependentonwatercontent)Resultsin: µg, μg/l,mg/l,ppm,%,mC, customized with formula generatorIndication: biamperometrical,polarizationwith square-wave voltage PowerSupply: 115-230V,50-60HzInterface: RS232Balanceconnection: RS232Dimensions(widthxheightxdepth): 100x400x200mmWeight: 5kg

Advantages

Specifications

reagent consumtion

ECHElektrochemieHalleGmbHWeinbergweg23D-06120Halle(Saale)Tel:+49-345-5583-711Fax:+49-345-5583-710E-mail: info@ech.deInternet:www.ech.de

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measuring method for oil

preparation and protocol of the titration test

Evaluation of the titration test