MacConkey Agar No.3

MacConkey Agar No.3

This is a selective medium primarily for the isolation of Enterobacteriacae from waters & sewage. This media differs from the original MacConkey formulation in that as well as Bile Salts, Crystal Violet has been included as an additional selective agent. This has the effect of inhibiting gram-positive micrococci.

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Product Description

Organisms Ref. No Result
Escherichia coli NCTC 12923 Pink/red colonies
Proteus mirabilis NCTC 10975 Pale colonies
Salmonella typhimurium NCTC 12023 Yellow colonies
Enterococcus faecalis NCTC 12697 Inhibited