G.A.S. is an instrument manufacturing high-tech company founded in 1997 coupling gas chromatography to ion mobility (GC-IMS) to measure traces of volatile organic compounds (VOC) in air, industrial gases, human breath and the headspace of liquid and solids. The application field of Product Quality Control comprises for example solutions for the Food & Beverage Industry, for impartial flavour documentation and for off-flavour detection The application field of Gas Monitoring offers turn-key ready solutions for VOC monitoring, for Siloxane measurements in biogas, for monitoring the odorisation agent levels in the natural gas grid and monitoring gas filter loading levels. The applications in Human Breath analysis aim to identify VOC's as diagnostic markers, confirm or exclude intoxication or in studying pharmacokinetics.