Coulometric Karl Fischer titration

Composition

Coulometry normally necessitates two reagent solutions, an anolyte and a catholyte. The anolyte is added to the anodic compartment and the catholyte to the cathodic compartment.
HYDRANAL^®-Coulomat A reagents are used as anolyte. Every anolyte contains iodide and a sulphur dioxide/imidazole buffer in a suitable solvent. HYDRANAL^®-Coulomat C reagents are used as catholytes.

Toxicity

HYDRANAL^®-Coulomat G-Types have been developed as anolyte as well as catholyte.
These reagents are:

• Pyridine free.
• Chloroform free.
• Carbon tetrachloride free.
• 2-methoxyethanol free.

HYDRANAL^®-Coulomat G reagents contain methanol as the most hazardous component. The non-toxic HYDRANAL^®-Coulomat E is mainly based on ethanol and must not wear the skull and crossbones on the label.

Stability

All reagents have a shelf life of at least five years, as long as the bottles remain unopened.

Advantages of the coulometric titration

• Easy to use.
• High accuracy.
• Suitable for the determination of 10 mg - 10 mg of water.
• Reagents available with and without halogenated hydrocarbons.

View Product List and Ordering Information

Literature

English
Karl Fischer titration	The Coulometric Cell
HYDRANAL®-Coulomat Oil	A new reagent for the coulometric water determination in oils
Analytix 3/2008	Coulometric water determination according to Karl Fischer
Deutsch
Karl-Fischer-Titration	Die Coulometriezelle
HYDRANAL®-Coulomat Oil	Ein neues Reagenz für die coulometrische Wasserbestimmung in Ölen

Back to top

Back to HYDRANAL^®-home