Dust Monitoring A compact, versatile Low Volume Air Sampler with wide flow range of 0-5LPM & 0-500mLPM for monitoring gaseous and particulate pollutants in ambient air and the work - space environment to analyze inorganic gases such as SO2, NOx. Nh3, CS2, Hydrocarbons, Solvent Vapor, Benzene & to determine Suspended Particulate Matter (SPM) as per the factory act 1948 amended in 1987-88 provided for regulation of monitoring of workspace environment and exposure of workmen to harmful pollutants and chemicals. This instrument is small, light in weight, mounted in a compact aluminium case and is fitted with a diaphragm pump, a rota meter and a pinch valve for flow adjustment. The instrument is a micro controller based unit for timer operated function of the system. It comes with a digital display timer and sampling devices.