Metrohm has developed a way of determining the moisture content of gases based on the ISO standard 10101: Natural gas: Determination of water by the Karl Fischer method.
In order to ensure a reproducible gas-introduction time, the control of the valves should be automated, which can be achieved with the Tiamo titration software.
By using a relay box, the valves can be opened and closed according to the conditioning or determination status of the coulometer.
The duration of the gas introduction is documented and can be used for calculating the gas volume.
The gas to be analysed is passed through the Karl Fischer titration cell in which the water is absorbed by the KF reagent and then determined using Metrohm's 831 KF Coulometer.
In addition to natural gas, the Metrohm method can also be used for other gases that do not react with the Karl Fischer reagent.
