Phenol Red Dextrose Broth 500g 21 G/L Mm1038-500g -IS5165

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.