Enterococcus Selective Agar is the same as Enterococcosel Broth (Cat. CL-1204) that 1.2% agar has been added to. It is a sensitive enrichment medium for the isolation of streptococci from specimens containing numerous other flora. Many organisms such as saprophytic Neisseria, Staphylococcus, Haemophilus, non-hemolytic streptococci, and a certain number of Enterobacteriaceae are inhibited wholly or partially, which permits satisfactory fluorescence studies of Group A streptococci in 18 – 24 hours. Casein and Soy peptones provide essential nutrients for growth. Dextrose is the fermentable carbohydrate energy source. Sodium chloride maintains the osmotic balance. Sodium citrate provides additional carbon. Sodium azide is an inhibitor and sodium sulphite when reduced produces H2S. L-Cystine lowers the oxidation-reduction potential by removing oxygen to maintain a low Eh. Crystal violet is a pH indicator and bacteriological agar is the solidifying agent.
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