Recent studies sponsored by USEPA have concluded that Fine Particles, (PM2.5) which penetrate deep into the lungs, are more likely to contribute to health effects. Fine Particulate Matter (FPM) also adversely affects visibility. In keeping with Envirotech’s tradition of anticipating the need and pioneering development of suitable indigenous instruments the APM 550 Fine Particle Sampler has been developed. The APM 550 system is a manual method for sampling fine particles (PM2.5 fraction) and is based on impactor designs standardized by USEPA for ambient air quality monitoring.

Compact and portable for convenient field operation.

Particle Size :	Omni-directional air inlet with PM 10 separation through an impactor followed by PM 2.5 separation through a WINS Impactor.
Sampling rate :	Constant sampling rate of 1m3/hr unaffected by voltage fluctuation and filter choking maintained by critical orifice system.
Filter Media :	Filter holder designed to accept any standard 47 mm diameter filter media.
Sample Volume :	Dry Gas meter records the total air volume sampled.
Power Requirement :	Single phase AC 220 Volts, 50 Hertz supply. Sampler unaffected by +/- 10% fluctuation in supply voltage