MacConkey Broth w/ Neutral Red is recommended for the selective enrichment and enumeration of coliforms.
Composition**
Ingredients Gms / Litre
Peptic digest of animal tissue 20.000
Lactose 10.000
Bile salts 5.000
Sodium chloride 5.000
Neutral red 0.075
Final pH ( at 25°C) 7.4±0.2
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