Classificazione Clean Room
| ISO 14644-1 | Class 3 | Class 4 | Class 5 | Class 6 | Class 7 | Class 8 |
| Federal Standard 209E |
1 |
10 |
100 |
1.000 |
10.000 |
100.000 |
| EU GGMP |
- |
- |
A/B |
- |
C |
D |
| Hour Air Changes |
360/540 |
300/540 |
240/480 |
150/240 |
80/90 |
5/48 |
BS 5295 cleanroom standards
| maximum particles/m³ | |||||
| Class | ≥0.5 µm | ≥1 µm | ≥5 µm | ≥10 µm | ≥25 µm |
| Class 1 | 3 | 0 | 0 | 0 | |
| Class 2 | 300 | 2 | 30 | ||
| Class 3 | 1,000,000 | 20 | 4 | 300 | |
| Class 4 | 200 | 40 | 4 | ||
5295 Class 1 also requires that the greatest particle present in any sample does not exceed 5 μ
GMP EU classificationBS
|
Class |
maximum particles/m³[11] |
|||
| At Rest | At Rest | In Operation | In Operation | |
|
0.5 µm |
5 µm |
0.5 µm |
5 µm |
|
|
Class A |
3,520 | 20 | 3,500 | 20 |
|
Class B |
3,520 | 29 | 352,000 | 2,900 |
|
Class C |
352,000 | 2,900 | 3,520,000 | 29,000 |
|
Class D |
3,520,000 | 29,000 | n/a | n/a |
