Laser Dust Particle Counter is a touch-screen controlled unit adopted with light weight air pumps. Features 3.53 cfm of sampling flow rate for 0.5 µm, 1 µm, 3 µm, 5 µm, 10 µm, 25 µm particles. Designed with stainless steel and built-in lithium battery along with DC power supply, allows continuous testing time of 5 hours. With built-in thermal printer and 5 to 9999 sec of sampling time, it is a lightweight unit to carryout different experiments.