Dust particles counter HandiLazHandiLaz particle counter structure is compact, solid and durable, reliable, cheap, easy to use, is a rare high-quality handheld particle counter. Is a low-cost alternative detection device count value of up to 2,000,000 particles / ft. battery-powered, non-intermittent continuous use of the laser diode, the instrument does not need to clean up the simultaneous detection of three fixed channel particle size and particle number particle size sensitivity the 0.3,0.5,5.0 micron sample flow of 0.1 cubic feet / cylinder minimal noise, flow control can be saved 10.000 sets of sample parameters without sampling mode via RS-232 or RS-485 output data