UVGAS9 Series is a product used for continuous gas analysis, which is suitable for the measurement of a variety of gases with ultraviolet absorption characteristics. Such as NH3, SO2, NO, NO2, H2S, CS2,H2O, various benzene series, chlorine gas, fluorine gas and O2. Due to the use of hot-wet method, NH3, NO2, SO2 and other water-soluble gases have no loss.