Dust-free laboratories can be categorized into the following classes:
1. Class 1. The first level of clean room, mainly used for the manufacture of integrated circuits, whose precision requirements are in the sub-micron.
2, Class 10. Class 10 clean room is mainly used in the semiconductor industry with a bandwidth of less than two microns.
3、Class 100. Class 100 clean room, mainly used for aseptic production, including transplant surgery, the production of collection vessels, as well as some patients who are susceptible to bacterial infection, such as bone marrow transplant patients.
4、Class 1000. This clean room is mainly suitable for making high-quality optical products, but also for testing, navigational standards, and the installation of precision micro-fine bearings.
5、Class 10,000. Class 10,000 clean room is mainly used for the installation of hydraulic equipment or pneumatic equipment, but also can be used in the food and beverage industry, in addition, class 10,000 clean room is also commonly used in the medical industry.
6、Class 100,000. One hundred thousand class clean room is mostly used in the industrial sector, for example: the manufacture of optical goods, for the manufacture of smaller components, large electronic systems, hydraulic or pneumatic system manufacturing, food and beverage production, the medical industry is also often used in this class clean room.
The number of particles in an area is used to indicate the degree of air cleanliness. The so-called "thousand", "ten thousand" "clean room", that is, 0.5μ m above the number of dust particles in the 1000 or 10,000 or less. Therefore, class 100, class 1,000, class 10,000, are divided by the number of particles. Generally speaking, the lower the cleanliness level, the higher the purification level.