Table 2.
Coupon results from the temporal assessment of methyl bromide fumigation efficacy
| Time point (h) | Location ID (Fig. 3) | Test coupons | Procedural blanks | ||
|---|---|---|---|---|---|
| Total CFU recovered | Total CFU recovered | ||||
| Wood (n = 6) | Glass (n = 6) | Wood (n = 2) | Glass (n = 2) | ||
| 16 | W | 0a | 828 ± 2027b | 0 | 0c |
| 24 | X | 0 | 0 | 0 | 0 |
| 32 | Y | 0 | 0 | 0 | 0 |
| 40 | Z | 0 | 0 | 0 | 0 |
a
For replicate #2 of 6), one filter‐plate sample (1 ml analysed) yielded 1 CFU. When 7·5 ml from the same sample was analysed, zero CFU were observed. No CFU were observed from the other 5 replicate wood biological indicators (BIs) at 16 h.
b
Viable spores recovered from 1 of 6 replicate BIs. 4967 CFU recovered from replicate #6 of 6.
c
Contamination by nontarget bacteria was observed on both glass procedural blanks at 16 h time point. For replicate 1, 2 and 14 CFU were observed on the 1 and 7·9 ml filter‐plates samples respectively. For replicate 2, 4 and 50 CFU were observed on the 1 ml and 7·8 ml filter‐plate samples respectively.