The Serinus 51 Sulfur Dioxide and Hydrogen Sulfide analyzer delivers precise and reliable performance at excellent value. It combines pulsed fluorescence detection with an internal catalytic converter to sequentially measure H2S and SO2 in the range of 0-2/0-20 ppm respectively with a detection limit of 0.3 ppb.The Serinus range of analyzers has been designed using our experience and knowledge gained from operating large air quality monitoring networks for more than 35 years. The result: instruments that integrate seamlessly into continuous monitoring networks.