Table 14.3.
Particle concentration in local clean area of the operating room
| Sampling position | On the ceiling | 0.9 m above the floor | |||
|---|---|---|---|---|---|
| Particle concentration with diameter ≥0.5 μm (pc/L) | Particle concentration with diameter ≥5 μm (pc/L) | Particle concentration with diameter ≥0.5 μm (pc/L) | Particle concentration with diameter ≥5 μm (pc/L) | ||
| Before starting up | 31,500 | 60 | 31,500 | 60 | |
| 20 min after starting up (without surgery operation) | 1 | 0 | 0 | 3.5 | 0 |
| 3 | 0 | 0 | 3.2 | 0 | |
| 5 | 0 | 0 | 5 | 0.6 | |
| 7 | 16 | 2.5 | 7 | 0.6 | |
| 8 | 16 | 1.4 | 5.3 | 0 | |
| At the return air grille | |||||
| 10 | 9.5 | 0.6 | |||
| 12 | 11 | 0.9 | |||