|Beef extract||1 g|
|Phenol red||0.025 g|
|Distilled water||1 liter|
Heat with agitation to dissolve agar and boil 1 min. Dispense 20 ml portions into 15 × 100 mm petri dishes. Autoclave 15 min at 121°C. Final pH, 7.4 ± 0.2.
Original Source: Bacteriological Analytical Manual, 8th Edition, Revision A, 1998.