MacCONKEY BROTH PURPLE W/ BCP (as per ISO 9308-2-1990)

MacConkey Broth Purple w/ BCP is a modification of MacConkey Medium. MacConkey Broth Purple w/ BCP is recommended by ISO committee with the inclusion of bile salts, as a presumptive test medium for identification of coliforms from water and other materials of sanitary importance. Lactose fermenting organisms turn the medium yellow due to the acidity produced on lactose fermentation. The colour change of the dye is observed when the pH of the medium falls below 6.8. Lactose non-fermenting organisms like Salmonella and Shigella do not alter the appearance of the medium.

for presumptive identi?cation of coliforms from water