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â¢ Hydranal is a range of products specifically designed for Karl Fischer Titration. In 1979, Eugen Sholz and Helga Hoffmann started developing ways to improve the Karl Fischer technique. Hydranal is a range of products specifically designed for Karl Fischer Titration. In 1979, Eugen Sholz and Helga Hoffmann started developing ways to improve the Karl Fischer technique.
Using HYDRANAL-Coulomat Reagents The following procedure is generally used forthe coulometric determination of water (Figure 3):1. Fill the cathodic compartment with HYDRANAL-Coulomat CG or E2. Fill the anodic compartment with HYDRANAL-Coulomat A, AG, AG-H or E3.YDRANAL-Solvent is a solution of sulfur dioxide and imidazole in methanol. HYDRANAL-Titrant contains a solution of iodine with a precisely defined concentration. Stability The titrants have a shelf life of three years, thesolvents five years, as long as the bottles areunopened.