A basal medium containing a single carbohydrate used to determine whether bacteria can ferment the specific carbohydrate. The medium contains a pH indicator that changes from red to yellow if the bacteria can ferment the carbohydrate. May be used with Durham tubes to determine if gas is produced during the fermentation process. 500 g Phenol Red Sucrose Broth Use 21 grams with 1 liter of water. DOT Info: Non-regulated