„Zeroing in on Zero Gases“ article appeared in February 2015 issue of Hydrocarbon Engineering.
Stringent industry environmental legislation together with fiscal monitoring for oil and gas trading has become increasingly important during the last years. Therefore the accurate measurement of both product quality and emissions from processing has become essential and the degree of accuracy required is constantly increasing. These developments demand precise calibration gas mixtures and ultra high purity zero gases as critical components of the measurement process.
Gas chromatography is the most common analytical procedure used in hydrocarbon processes. Whether GC-FID or GC-TCD both methods require a high purity carrier gas. And there are other analytical methods where zero gases are needed, i.e. FTIR, NDIR or CRDS. Furthermore, high purity gases are required to set the zero on most types of analytical instrument measuring gases.