DROP Enviro Engineers & Service made Respirable dust sampler ,PMI-410 NL sampler uses an improved cyclone (with sharper cutoff) to separate the coarser particles (>10 microns) from the air stream before filtering it on the 0.5 micron pore size filter allowing measurement of both TSP and Respirable fraction of suspended Particulate Matter (SPM).

our customers demand that high noise level is one main bottleneck for monitoring ambient air quality around schools, hospitals, libraries, institutional areas, wildlife sanctuaries and other noise sensitive areas. To moot this application specific requirement, we have, introduced PMI-410 NL which incorporates a noiseless brushless & Belt-less continuous duty Turbine blower.