The determination of small amounts of water in gases using Karl Fischer reagent

Two methods are described for the determination of water in gases. In the first method, the gas being examined is led into a Karl Fischer titration cell, and water is titrated directly. In the second method, water from a gas stream is absorbed on a short column of a gas-chromatographic stationary phase. On heating the column, water is liberated and is carried over to the karl Fischer cell in a stream of dry nitrogen and then titrated. The validity of the direct titration method has been checked by examining gas streams that had been passed over ice at various temperatures.