Slanetz and Bartley Medium, Granulated 500G

Slanetz and Bartley Medium, Granulated is recommended for detection and enumeration of faecal Streptococci by membrane filtration technique. The medium is highly selective for Enterococci. Sodium azide inhibits gram-negative organisms. Triphenyl Tetrazolium Chloride is reduced to the insoluble formazan inside the bacterial cell forming dark red-coloured colonies. Enterococcus faecalis grows luxurianlly as red or maroon colonies while Escherichia coli is inhibited on this medium.