Through certain technical means, remove particles, bacteria, viruses, harmful gases and other pollutants in the air within a certain range, and at the same time, control the cleanliness, temperature, humidity, air pressure, wind speed, noise, and lighting parameters in the area Within a certain range of requirements. This project is called the purification project. This room is a clean room.

The clean room originated in a hospital. In the 1880s, Lauder List realized that bacteria can cause infections in surgical wounds. Removing bacteria from the operating room can prevent infections, laying the scientific theoretical foundation for clean rooms.

At this stage, clean rooms are widely used in industries such as microelectronics, optoelectronics, medicine, medical treatment, microorganisms, instruments, meters, aerospace, aviation, food, health products, and cosmetics. From our professional point of view, clean rooms are basically ubiquitous.

There are many parameters that need to be controlled in the purification project, the most important thing is the number of particles, that is, the control of cleanliness. According to the maximum allowable concentration of particles of different particle sizes in the air, we mainly look at the particle concentration of 0.5 micron and 5 micron to divide the air cleanliness of the clean room into 100, 10,000, and 100,000 grades.

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