MacConkey Agar (Dehydrated)

Detect, isolate and enumerate coliforms and intestinal pathogens in water, dairy products and biological specimens with Thermo Scientific™ Oxoid™ MacConkey Agar (Dehydrated). This differential medium gives a number of diagnostic indications such as bile tolerance, colony morphology and chromogenesis. MacConkey Agar corresponds to the medium recommended by the World Health Organizaton¹, the Department of Health² for the bacterial examination of water.

Use MacConkey Agar for the cultivation of pathogens which may be present in a variety of specimens.

• Easy-to-read: easy to differentiate Escherichia coli (red non-mucoid colonies) from Staphylococcus spp. (pale pink opaque colonies) and Pseudomonas aeruginosa (green-brown) colonies.
• Recommended by World Health Organizaton¹, the Department of Health².

Due to its ability to support the growth of pathogenic Gram-positive cocci (e.g. staphylococci and enterococci) as well as Enterobacteriaceae, MacConkey Agar is particularly recommended for the cultivation of pathogens which may be present in a variety of specimens such as urine, feces and wound swabs. While it is selective it does not suppress a mixed bacterial flora to the same extent as other inhibitory media (including other MacConkey agars). MacConkey Agar should be used in parallel with other selective indicator media such as Desoxycholate Citrate Agar, Bismuth Sulphite Agar, Brilliant Green Agar and Brilliant Green Bile (2%) Broth, and a non-selective medium such as Blood Agar.

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