The Serinus 44 analyser delivers precise and reliable performance at excellent value. It uses proven chemiluminescence technology and an external thermal catalytic converter to measure NO, NO2, NOx and NH3 in ambient air (LDL < 0.4 ppb, Range 0 – 20 ppm). The Serinus range of analysers has been designed using our experience and knowledge gained from operating large air quality monitoring networks for more than 40 years. The result: instruments that integrate seamlessly into continuous monitoring networks. Selected materials available in other languages by request.