Phenol Red Dextrose Broth Powder, 500 g - Differentiating Growth Medium

This package includes 500 grams of Phenol Red Dextrose Broth Powder, 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. Use 21 grams with 1 liter of water.