Product category:
Materials Testing
News Release from: Metrohm UK | Subject: 831 KF Coulometer
Edited by the Manufacturingtalk Editorial
Team on 01 November 2006
Water content in gases according to ISO
10101-3
Tips and tricks for determining the water content in gases according to ISO 10101-3
Metrohm has now developed a method based on the ISO standard 10101: Natural gas: Determination of water by the Karl Fischer method The reproducible determination of the water content is tricky as many gases usually only contain a few ug/L water
This article was originally published on Manufacturingtalk on 25 Apr 2008 at 8.00am (UK)
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Determining water levels in lubricating oils
It is impoirtant to determine the presence of water in machinery lubricating oils, which is why Metrohm is offering its 831 KF Coulometer to give reliable results over a long period.
The problem is not the coulometric measurement itself, but the sample introduction.
An optimal measuring setup and the exact determination of the gas volume are the be-all and end-all of water determination in the lower ppm range.
In order to ensure a reproducible gas introduction time, the control of the valves should be automated.
The tiamo titration software is also extremely suitable for this purpose: by using a relay box, the valves can be opened and closed according to the conditioning or determination status of the coulometer.
In addition, 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. Request a free brochure from Metrohm UK ...
In addition to natural gas, the Metrohm method can also be used for other gases (e.g nitrogen) that do not react with the Karl Fischer.
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