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.
PP1720 – MacConkey Agar No.3
|Shelf Life (days)|
|Storage Temp (°C)|
|Escherichia coli||NCTC 12241||Pink/red colonies|
|Proteus mirabilis||NCTC 10975||Pale colonies|
|Enterococcus faecalis||NCTC 12697||Inhibited|