# 302: NUTRIENT BROTH WITH 10% HORSE SERUM ## Main sol. 302 5 g Peptone 3 g Meat extract 15 g Agar, if necessary 1000 ml Distilled water 1. To autoclaved medium add: 100 ml Horse serum (sterile) 2. Adjust pH to 7.0. For Bacillus strains the addition of 10.0 mg MnSO4 x H2O is recommended for sporulation.