The Hongji Clean Y09-8P Laser Dust Particle Counter (28.3L/min) is a detection instrument used to measure and analyze the size and quantity of dust particles per unit volume of air in clean environments, and to determine the cleanliness level of clean environments according to standards.
Widely used for clean room testing in enterprises such as medicine and health, optics, chemistry, food, cosmetics, electronics, biological products, aerospace, etc.

Particles in the air scatter when exposed to light, a phenomenon known as light scattering. Light scattering is related to factors such as particle size, wavelength of light waves, refractive index of particles, and their light absorption characteristics. However, in terms of scattered light intensity and particle size, there is a basic rule that the intensity of scattered light from particles increases with the increase of their surface area. In this way, by measuring the intensity of scattered light, the size of particles can be inferred, which is the basic principle of light scattering particle counters.

Set the sampling period to 1 minute, with 3 sampling times per point, 4 sampling points per room, and define the room sampling address as 1. Connect the sampling port and constant velocity sampling head of the instrument with a hose, fix the sampling head to the first measurement position, press the start button to start the instrument measurement, and after 1 minute, print out the first set of data for the first point. Continue measuring until the third set of data is printed, and the instrument will automatically stop sampling; Then move the constant velocity sampling head to the second measurement position and measure the second point data using the same method until all four measurement points are measured. The instrument will automatically print out the UCL data of the room as the basis for determining the cleanliness level of the room.