Wan-level purification mainly depends on the clean air to continuously dilute the indoor air, the indoor pollution gradually discharged, to achieve the clean effect. The indoor air flow is not parallel flow at uneven speed, mixed with reflux or eddy, different grades of dustless room, mainly depends on the amount of air delivered in the unit time to achieve. There are currently two standards of 100,000 and 300,000.
conception
Clean Room, also known as Clean Room or Clean Room.
"Clean room" refers to the certain space within the scope of the particles in the air, bacteria and other harmful air pollutants, and the indoor temperature, cleanliness, interior pressure, air velocity and air distribution, noise, vibration and lighting, static control within the scope of a certain demand, and the special design of the room. That is, no matter how the external air condition changes, the indoor can have the characteristics of cleanliness, temperature and humidity, pressure and so on.
role
Clean room of the main function is to control products (such as silicon) contact by clean living and temperature and humidity of the atmosphere, can make the products in a good environment of production and manufacturing in the space, this space we call it "clean room".
All countries in the world have their own specifications, but they are generally more than 209 in the us federal standard. The following are only the introduction and comparison between 209D and 209E and other countries in the world.
The biggest difference between 209E and 209D is that 209E indicates that the unit increases the metric unit, and the clean room level is represented by the word "M", such as M1, M1.5, M2.5, M3... ... And so on, combined with the standardization of international metric unit, after M letters of Arab Numbers is > = 0.5 per cubic meter of dust particle Numbers to 10 microns, powers said take index, if the number of tiny particles of dust between before and after the two powers completely, with 1.5, 2.5, 3.5,... Said.
The United States federal standard FS 209D is based on the UK per square foot, while Japan adopts the metric system, which is the standard of 0.1 mu m micro particles per cubic meter. The Japanese standard notation is Class 1, Class 2, Class 3... Class8 says the best Class is Class 1, and the worst is Class 8, which is the power of 10 to the power of 10 particles per cubic meter.

Ten thousand grade purification engineering

The construction of ESD PVC floor for ten thousand level workshop