According to new guide Air quality monitoring, where measurement of PM 2.5 is mandatory besides other parameters for defining the quality of ambient air. An impactor based PM 2.5 sampler has been manufactured by Soniya Scientific Equipment Solutions (SSES-FDS-004) which meets requirements of measurement of PM10 & PM 2.5. SSES-FDS-004 fitted with brushless and noiseless pump assembly where sampling rates of 1m3/hr is maintained constant with the help of orifice. This sampler is suitable for PM 10 & PM 2.5 monitoring simultaneously, means both the parameter can be sampled at a time.