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AQUA 40.00 - Water determination in all types of samples

AQUA 40.00 Basic Module
AQUA 40.00 Basic Module

The AQUA 40.00 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 determination. 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 applications 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:

  • Heating module for oils and for solids
  • Gas sampling module
  • Headspace module
  • High temperature oven module
  • LPG/LNG Module

 This video shows the principle of closed-loop carrier gas circulation of AQUA 40.00:


Water determination according to Karl-Fischer-Titration in

  • Solvents
  • Lyophilisates
  • Petro-chemicals
  • Biodiesel
  • Hydraulic oils / Mineral oils
  • Solids via liquid extraction


  • Infinitely variable electrolysis current for very fast analysis
  • Adjustment of titration rate to current amount of water to be titrated
  • Low background drift
  • All customary KF-reagents are suitable
  • Easy-to-use software
  • Defined methods for measurement
  • Status display through large-scale colouration
  • Additonal heating modules can be used

Data sheet


ECH Elektrochemie Halle GmbH
Otto-Eißfeldt-Straße 8
06120 Halle (Saale)

Tel.: +49 345 279570-0
Fax: +49 345 279570-99
Mail: info@ech.de