The 851 Titrando coulometer includes a generator electrode with diaphragm as well as an 801 magnetic stirrer. Coulometry is the perfect method for water determination of solids, liquids and gases within a trace range of 10 µg to 10 mg absolute water. Coulometry is also an absolute method so titer determination is not necessary. Coulometric titration is an easy and quick process with the use of the 851 Titrando. The recommended measuring range is 10 µg - 200 mg absolute water.