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Gradient dilution for MIC determinations
| Dilution step | Concentrationa |
|---|---|
| 1 | C1 |
| 2 | C2 |
| 3 | C1/2 |
| 4 | C2/2 |
| 5 | C1/4 |
| 6 | C2/4 |
| 7 | C1/8 |
| 8 | C2/8 |
| 9 | C1/16 |
| 10 | C2/16 |
| 11 | C1/32 |
| 12 | 0 |
C2 equals (C1 + C1/2)/2 equals 3C1/4 or C2 is a special concentration (C1 < C2 < C1/2) from pilot experiments.
