Himedia MacConkey Agar, RS

MacConkey Agar, RS

Details

MacConkey Agar, RS is recommended For isolating and differentiating Gram negative enteric bacilli from specimens containing swarming strains of Proteus species. Lactose is a fermentable carbohydrate, bile salts and crystal violet are selective agents that inhibit growth of gram-positive organisms. Neutral red is the pH indicator dye. Lactose fermenting strains such as Escherichis coli grow as red or pink colonies and may be surrounded by a zone of acid precipitated bile. Lactose non-fermenting strains, such as Shigella and Salmonella are colourless, transparent and typically do not alter appearance of the medium.