Table 1 Mean values of volumetric bacteria-carrying particles for different centerline velocity of the mobile laminar screen unit
MLAF screen velocity | Operating table | Instrument table one | Instrument table two |
|---|---|---|---|
CFU/m3 | CFU/m3 | CFU/m3 | |
(m/s) | Mean (min–max) | Mean (min–max) | Mean (min–max) |
off | 19.08 (9–32) | 18.12 (13–28) | 7.66 (5–24) |
0.2 | 9.94 (4–12) | 8.36 (3–13) | 1.82 (1–4) |
0.4 | 1.21 (1–4) | 1.14 (0–5) | 0.90 (0–3) |
0.6 | 0.72 (0–3) | 0.08 (0–1) | 0.08 (0–1) |
0.8 | 0.04 (0–1) | 0.06 (0–1) | 0.00 (0–0) |
1.0 | 0.00 (0–0) | 0.00 (0–0) | 0.00 (0–0) |