Antibiotic Medium No.11 (Neomycin, Erythromycin Assay Agar) is used for microbiological assay of antibiotics.
Composition**
Ingredients Gms / Litre
Peptic digest of animal tissue (Peptone) 6.000
Casein enzymic hydrolysate 4.000
Yeast extract 3.000
Beef extract 1.500
Dextrose 1.000
Agar 15.000
Final pH ( at 25°C) 8.3±0.2
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