TABLE 3.
Relative recovery of S. albus spores as a function of the collection flow rate measured with the agar slide impactor
| Flow rate (liters min−1) | Impaction velocity (m s−1) | n | Relative recovery (%)a |
|---|---|---|---|
| 3.8 | 24 | 5 | 30 ± 4* |
| 6 | 38 | 6 | 56 ± 20 |
| 8 | 50 | 6 | 68 ± 18 |
| 10 | 63 | 7 | 56 ± 20 |
| 15 | 94 | 7 | 54 ± 17 |
| 20 | 125 | 4 | 86 ± 11* |
| 25 | 156 | 5 | 75 ± 14* |
| 28 | 175 | 6 | 62 ± 12 |
a
Values marked with asterisks indicate statistically significant differences from recovery values for the other flow rates tested (P < 0.05 by the general linear model of the Statistical Analysis System followed by the Scheffe’s test). See text for more detail.