Large battery capacity: This instrument has a 2000mah battery capacity and long battery life. ABS material, strong and Principle: The instrument uses the principle of scattering to accurately measure the quantity and quality of particles of different particle sizes in the air per unit volume Fast test speed: specially designed for detecting the number of dust particles per unit volume in a clean environment, with multiple functions, high test accuracy, fast speed, and easy to carry Real-time recording: one sampling can measure the number of dust particles in six particle sizes at the same time, and record the detection results in real time, which can be used for research, detection and evaluation in various environments Wide range of uses: can be widely used in microelectronics, medical pharmaceuticals, biochemical products, food hygiene, cosmetics, high-precision machinery, fine chemicals and other departments, Manufacturer: XZXXZSZ