For the concept of clean room, people handle and purify the air within a certain range through various measures and methods, so that the indoor air reaches certain cleanliness. We usually call such room as a clean room, which can also be called decontamination chamber, dust free room, GMP plant, etc.
The clean room can generally be divided into two kinds, wherein one is industrial clean room, which is mainly applied to the fields such as space technology, precise instrument and meter, electronic products, spraying and printing, etc., and its main purpose is to control the precision of particles; The other is biological clean room, which is mainly applied to the fields such as food, beverage, pharmacy, medical health, experiment on microbiology, etc. and its main purpose is to control the microorganism adsorbed on the particles.
Air purification principle
Airflow→ air conditioner → primary air treatment→ fan air supply→ intermediate air treatment→ purification pipeline→ efficient air supply outlet→ clean room→ dust (microorganism) taking away→ return air channel→ return air and fresh air (airflow). The indoor air can be clean by circulating the process above.
Cleanliness class of airborne particulates in the clean room and clean area
|
ISO air cleaning |
maximum concentration limit not less than particle size in the table (P/m-air) |
209E
Cleanliness class of United States federal 209E |
|
0.1um |
0.2um |
0.3um |
0.5um |
1um |
5um |
|
ISO Class1 |
10 |
2 |
|
|
|
|
|
|
ISO Class2 |
100 |
24 |
10 |
4 |
|
|
|
|
ISO Class3 |
1000 |
237 |
102 |
35 |
8 |
|
1 |
|
ISO Class4 |
10000 |
2370 |
1020 |
352 |
83 |
|
10 |
|
ISO Class5 |
100000 |
23700 |
10200 |
3520 |
832 |
29 |
100 |
|
ISO Class6 |
1000000 |
237000 |
102000 |
35200 |
8320 |
293 |
1000 |
|
ISO Class7 |
|
|
|
352000 |
83200 |
2930 |
10000 |
|
ISO Class8 |
|
|
|
3520000 |
832000 |
29300 |
100000 |
|
ISO Class9 |
|
|
|
35200000 |
8320000 |
293000 |
300000 |
|
|
|
|
|
|
|
|
|
|
|
