High Volume Sampler With Respirable Dust Sampler. Respirable dust sampler is the basic instrument for monitoring ambient air quality. The sampler first separates the coarser particles (larger than 10 microns) from the air stream before filtering it on the 0.5 microns pore size filter allowing a measurement of both the TSP and the Respirable fraction of the suspended matter (SPM). High volume sampler (with Respirable dust sampling facility) is arranged to measure suspended particulates (SMP) and also simultaneous sampling of pollutant gases like SO₂, NOx, CL₂, H₂S, CS₂ etc. are analyzed subsequently by simple chemistry method to determine concentration of specific pollutant.

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