Malonate Broth is recommended for the differentiation of Enterobacter and Escherichia on the basis of malonate
utilization.
Composition**
Ingredients Gms / Litre
Ammonium sulphate 2.000
Dipotassium phosphate 0.600
Monopotassium phosphate 0.400
Sodium chloride 2.000
Sodium malonate 3.000
Bromothymol blue 0.025
Final pH ( at 25°C) 6.7±0.2

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