| Compounds | Concentration (µg/ml) | ||||||||||
| 300 | 275 | 250 | 225 | 200 | 175 | 150 | 125 | 100 | +ve | −ve | |
| Thymol | + | + | + | + | + | + | − | − | − | + | − |
| Eugenol | + | + | − | − | − | − | − | − | − | + | − |