what is hydranal
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.