MacConkey Agar is used for the isolation and differentiation of Gram-negative enteric bacilli in a laboratory setting. Conforms to Harmonised USP/EP/JP Requirements and FDA/BAM. MacConkey Agar is not intended for use in the diagnosis of disease or other conditions in humans. A medium recommended by the Harmonised USP/EP/JP for isolation and identification of Escherichia coli from non-sterile products. Conforms to USP/EP/JP performance specification. Gelatin serves as source of carbon and nitrogen. Lactose is a fermentable carbohydrate and sodium chloride maintains the osmotic balance. Bile salts and crystal violet act as selective agents inhibiting many Gram-positive bacteria. Escherichia coli can ferment lactose to produce acid which results in a pH drop. This is indicated by neutral red resulting in pink colonies. Enough acid production will cause the precipitation of bile salts resulting in a bile precipitate or halo around lactose fermenting bacteria. Non-lactose fermenting bacteria such as Salmonella spp. grow but remain colorless with no bile precipitate. According to the Harmonised USP/EP/JP, MacConkey Broth is used as a selective enrichment broth, with subculture performed onto MacConkey Agar.

• Analyte: E. coli
• Platform: dehydrated culture media
• Formula: enzymatic digest of gelatin 17.0g/L, enzymatic digest of casein 1.5g/L, enzymatic digest of animal tissue 1.5g/L, lactose 10.0g/L, bile salts mixture 1.5g/L, sodium chloride 5.0g/L, neutral red 0.03g/L, crystal violet 0.001g/L, agar 13.5g/L
• Grams per litre: 50.00
• Litres per 500g: 14.00
• Plates per 500g: 780.00