MacConkey Broth (Double Strength) w/Neutral Red (DM151BS) is recommended for primary isolation of coliforms from large samples such as water or waste water as per BIS.
| Ingredients | g / L |
| Peptic digest of animal tissue | 40.00 |
| Lactose | 20.00 |
| Bile salts | 10.00 |
| Sodium chloride | 10.00 |
| Neutral red | 0.14 |
| Final pH: 7.5 ± 0.2 at 25°C | |
| Formula may be adjusted and/or supplemented as required to meet performance specifications | |
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