V Tech Fine Particulate Sampler, Power Source : Electronic

Particulate air pollution is separated into three classifications; coarse, fine and ultrafine particles. Coarse particles have a diameter of between 10 and 2.5um and settle relatively quickly whereas fine (0.1 to 2.5 um in diameter) and ultrafine (<0.1um in diameter) particles remain in suspension for longer. Fine particulate sampler is precisely designed ambient air sampler fot fine dust sampling.