MacConkey Agar

MacConkey Agar (MAC) is used for the selective isolation of enteric pathogens. The composition for 1 liter of MacConkey Agar includes: peptone (20.0 g), lactose (10.0 g), bile salts No. 3 (1.5 g), sodium chloride (5.0 g), neutral red (0.03 g), crystal violet (0.001 g), and agar (15.0 g).