| Bacillus subtilis ATCC13952 amount (mL) | Experiment I | Experiment II | Experiment III |
| % Removed | % Removed | % Removed | |
| 1.5 | 16.852 | 17.006 | 17.058 |
| 2.0 | 32.964 | 30.754 | 29.898 |
| 2.5 | 78.976 | 76.887 | 75.564 |
| 3.0 | 98.863 | 98.584 | 98.779 |
| 3.5 | 94.033 | 93.836 | 94.102 |
| 4.0 | 94.124 | 94.003 | 93.986 |