MIANYANG BIGANT TECHNOLOGY CO LTD , https://www.bigantech.comThe Pocket Laser Respirable Dust Continuous Tester is used to measure the concentration of respirable dust (PM10/PM2.5) in the air of public places. It can also be used for the amount of dust particles with a particle size of 0.5 and 5.0 μm per unit volume of air in a clean environment. It is a new generation of intelligent measuring instruments that are quickly measured in real time by the Centers for Disease Control and Prevention, Health Supervision, and Environmental Monitoring.