This is a selective medium primarily for the isolation and differentiation of coliforms and non-lactose fermenting Gram –ve bacterial species from clinical, dairy, industrial and water samples. This media differs from the original MacConkey formulation with the addition of an extra 0.5% Sodium chloride, an altered Bile salt mix and the neutral red concentration was also modified. This enhanced the effect of inhibiting Gram +ve and other non-enteric bacterial species. This medium conforms to the requirements of the Harmonised USP/EP/JP.
PP1723 – MacConkey Agar (USP)
|Shelf Life (days)|
|Storage Temp (°C)|
Aerobically using Harmonised USP/EP/JP specified temperaatures and incubation times
|Escherichia coli||ATCC 8739||Pink/red colonies w bile precipitate|
|Salmonella typhimurium||ATCC 14028||Colourless colonies|
|Staphylococcus aureus||ATCC 6538||Inhibited|