APM 550M

Designed for convenient monitoring of both PM 10 and PM 2.5 simultaneously 

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Particle Size

Omni-directional air inlet with PM10 separation through an impactor followed by PM2.5 separation through a WINS impactor. two separate streams for separation of PM2.5 and PM 10 Particles of dust are collected on two different filter papers .

Sampling Rate

Constant sampling rate of 1 m3/hr, unaffected by voltage fluctuation maintained by critical orifice system in each stream.

Filter Media

Filter holders designed to accept any standard 47 mm diameter filter media.

Sample Volume

Independent Diaphragm Gas meters (DGM) for PM 10 & PM 2.5 flow streams. 

Power Requirement

Single phase AC 220 volts, 50 Hertz supply. Sampler unaffected by +/- 10% fluctuation in supply voltage


One year

Sampling Time 

Time Totalizer records the period of operation.