Table 1.
Viability assay of stabilized chlorine dioxide solution against spores of B. subtilis ATCC 6051 and B. pumilus SAFR-032
| Colony forming units | |||
|---|---|---|---|
| ClO 2 concentration (μg/mL) | Exposure time | B. subtilis ATCC 6051 | B. pumilus SAFR-032 |
| 0 | N/A | 4.59 ± 1.71 × 104 | 1.30 ± 0.32 × 105 |
| 47 | 10 m | 4.70 ± 3.11 × 103 | 2.40 ± 0.10 × 104 |
| 47 | 60 m | 3.50 ± 2.12 × 102 | 1.10 ± 0.14 × 103 |
| 47 | 24 h | n.d. | n.d. |
| 187 | 10 m | n.d. | n.d. |
| 187 | 60 m | n.d. | n.d. |
| 187 | 24 h | n.d. | n.d. |
Notes: Viability assay of B. subtilis ATCC 6051 and B. pumilus SAFR-032 dried spores on glass cover slips after exposure to stabilized chlorine dioxide solution at 47 or 187 μg/mL concentration and 10 min, 60 min, or 24 h exposure. n.d. = no colonies detected and thus CFU could not be determined.