Malonate Agar (DM1900) is recommended as a differential medium for the differentiation of Enterobacter and E.coli on the basis of their ability to utilize malonate.
Formula / Liter:
| Ingredients | g/ L |
| Yeast extract | 1.00 |
| Sodium malonate | 3.00 |
| Sodium chloride | 2.00 |
| Ammonium sulphate | 2.00 |
| Bromothymol blue | 0.03 |
| Agar | 16.00 |
| Final pH: 6.7±0.2 at 25°C | |
| Formula may be adjusted and/or supplemented as required to meet performance specifications | |
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