EU Guidelines to Good Manufacturing Practice: Annex 1 | |||||||
|---|---|---|---|---|---|---|---|
maximum particles/m³ | 14644-1:2015 | maximum particles/m³ | 14644-1:2015 | ||||
equivalent | equivalent | ||||||
Grade | At Rest | Grade | In Operation | ||||
≥0.5μm | ≥5.0μm | ISO | ≥0.5μm | ≥5.0μm | ISO | ||
A | 3,520 | 20 | 5 (4.8) | A | 3,520 | 20 | 5 (4.8) |
B | 3,520 | 29 | 5 | B | 352,000 | 2,900 | 7 |
C | 352,000 | 2,900 | 7 | C | 3,520,000 | 29,000 | 8 |
D | 3,520,000 | 29,000 | 8 | ||||
* Note: Particle classifications are not exactly per ISO 14644-1:1999; differences are noted in bold.