• Envirotech Instruments Private Limited

Fine Particle Sampler, Apm 550

Envirotech Instruments has Fine Particle Sampler, Model APM 550. 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. Ambient air enters the APM 550 system through an omni-directional inlet designed to provide a clean aero dynamic cut point for particles greater than 10 micros. Particles in the air stream finer than 10 microns proceed to a second impactor that has an aero-dynamic cut point at 2.5 microns. The air sample and fine particulates exiting from the PM2.5 impactor is passed through a 47 mm dia. Teflon filter membrane that retains the PM2.5. This is a manual method of sampling PM2.5 micron particulate matter based on impactor designs standardized by USEPA. It uses a brushless pump with low noise. Critical orifice maintains a constant sampling rate of 16.6 LPM. It is compact portable and convenient for field operation. The company is a leading Indian manufacturer of air pollution monitoring instruments. Its current product range includes stack sampling systems, high volume samplers, PM 10 samplers, weather monitors and personal samplers. It has a dominant share of the Indian market with customers ranging from State Pollution Control Boards, leading environmental consultants and several hundred private and public sector industries spread all over the country.