FAQ
Cleanroom Classifications acc. to ISO 14644-1:2015
Maximum allowable concentrations (particles/m3) for particles equal to and greater than the considered sizes |
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Particle size |
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|
> 0,1 μm |
> 0,2 μm |
> 0,3 μm |
> 0,5 μm |
> 1 μm |
> 5 μm |
ISO Class 1 |
10 |
|
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ISO Class 2 |
100 |
24 |
10 |
|
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ISO Class 3 |
1 000 |
237 |
102 |
35 |
|
|
ISO Class 4 |
10 000 |
2 370 |
1 020 |
352 |
83 |
|
ISO Class 5 |
100 000 |
23 700 |
10 200 |
3 520 |
832 |
|
ISO Class 6 |
1 000 000 |
237 000 |
102 000 |
35 200 |
8 320 |
293 |
ISO Class 7 |
352 000 |
83 200 |
2 930 |
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ISO Class 8 |
3 520 000 |
832 000 |
29 300 |
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ISO Class 9 |
35 200 000 |
8 320 000 |
293 000 |