A device that is compact, versatile air sampler for monitoring gaseous and particulate pollutants in ambient air and the work - space environment that analyses inorganic gases such as so2, nox. This instrument is small, light in weight, mounted in a compact aluminum case and is fitted with a Diaphragm Pump, a Rota meter and a Pinch Valve for flow adjustment. The instrument is a microcontroller based unit for timer operated function of the system. It comes with a Digital Display Timer and Sampling devices.