What is a Karl Fischer titration?

Karl Fischer titrations determine the amount of water in a sample.

There are two types of Karl Fischer titration categories: volumetric and coulometric. For a Karl Fischer titration to work, the titrant has to only interact with the water in your sample (if there are interferences, they can sometimes be negated), and you need four chemical components (methanol (or ethanol), sulfur dioxide, imidizole (base), and iodine).

Hanna Instruments has four Karl Fischer Titrators. The older line of titrators are the HI903 Volumetric Titrator and the HI904 Coulometric Titrator. The newest line of Karl Fischer Titrators with updated features, titrator body, and more are the HI933 Volumetric Titrator and the HI934 Coulometric Titrator.