The addition of tryptophane enables an indole test for E. coli.
Sodium chloride (NaCl) | 5 g/l |
Phosphate buffer | 4,9 g/l |
Peptone | 3 g/l |
Sodium pyruvate | 1 g/l |
Tryptophane | 1 g/l |
Sorbitol | 1 g/l |
Chromogene Mixture | 0,36 g/l |
Sodium heptadecyl sulphate (Tergitol-7) | 0,1 g/l |
Agar | 10 g/l |
pH value | 6,8 ±0,2 |