Billing & Purity

KEMA determines energy content of gases for billing purposes, produces calibration and test gases and measures the level of impurity

Billing
The energy content of a gaseous energy carrier is the basis for the billing process: getting producers, transporters and consumers to agree on the economic value of the gas. In the European high-pressure gas transport network the calorific value is measured at all major junctions using, among other things, gas chromatographs. KEMA’s analytical laboratory facilitates a large number of these measurements through the production of calibration and test gases and by providing its fundamental expertise in measurement techniques for gas quality .The concentration of impurities is also an important quality criterion, both for the billing process and the combustion behavior in the end user’s appliances.

Purity
For detailed gas analysis, the fractions of most major and minor components can be determined by standard gas chromatography. It is also possible to analyze gases whose composition is either completely unknown or that possibly contain less common molecules not accessible to standard chromatography. In this case, the use of the combination of gas chromatography and mass spectrometry is recommended, a routine method in our laboratory.