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Antimicrobial activity of natural pumice and NP-BHA composites
| Time (h) |
NP (CFU/ml) |
5 wt% NP-BHA | 10 wt% NP-BHA | Control (E. faecalis) |
|---|---|---|---|---|
| 0 | 6.7 × 104 | 7.4 × 104 | 7.0 × 104 | 5.6 × 104 |
| 6 | 8.3 × 107 | 9.8 × 107 | 8.3 × 107 | 1.1 × 108 |
| 24 | 5.0 × 108 | 1.3 × 109 | 3.0 × 108 | 1.8 × 109 |
