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| Concentration | Zone of inhibition (cm in diameter) | ||||
|---|---|---|---|---|---|
| Bacillus subtilis | Escherichia coli | Enterobacter sp. | Staphylococcus aureus | Pseudomonas fluorescens | |
| 25 μL | 1.6 | 1.8 | 1.8 | 2.0 | 0.8 |
| 50 μL | 1.8 | 2.2 | 2.1 | 2.1 | 0.9 |
| 75 μL | 2.1 | 2.5 | 2.2 | 2.4 | 1.1 |
| 100 μL | 2.4 | 2.7 | 2.6 | 2.6 | 1.1 |
