The portable particle counter is a compact and powerful environmental monitoring tool. It uses the advanced laser scattering principle to quickly and accurately detect the number and particle size distribution of particles in the air. The outer shell is mostly made of high - strength engineering plastics, which are sturdy, durable, and lightweight, making it easy to carry to different places. Its advantages are simple operation and intuitive data display, allowing real - time access to test results. Widely used in places with high air cleanliness requirements such as cleanrooms, laboratories, and hospital operating rooms, it helps users timely grasp the air quality situation and take corresponding measures to ensure environmental compliance.