This test method is based on the Karl Fischer reaction for determining water-the reduction of iodine by sulfur dioxide in the presence of water to form sulfur trioxide and hydriodic acid. The reaction becomes quantitative only when pyridine or other organic base and methanol or other alcohol are present. Unlike the volumetric Karl Fischer reagents that include iodine, the coulometric technique electrolytically generates iodine, with 10.71 C of generating current corresponding to 1 mg of water in accordance with Faraday’s law.

Coulometric Karl Fischer Titration/Two-component cell (MKC-610-DT)

Coulometric Karl Fischer Titration/One-component cell (MKC-610-NT)

Coulometric Karl Fischer Titration/Two-component cell (MKC-520-D)

Coulometric Karl Fischer Titration/One-component cell (MKC-520-N)

Coulometric Karl Fischer Titration/Two-component cell (MKC-501-D)

Coulometric Karl Fischer Titration/One-component cell (MKC-501-N)