Shopping cart
You have no items in your shopping cart.

Violet Red Bile Agar

Violet Red Bile Agar is used for the detection and determination of coliforms in food, milk, water, and other sanitary materials. It is a selective medium which detects the growth of lactose fermenting coliforms. Neutral red within this formulation acts as a pH indicator while Crystal Violet and Bile Salts inhibit the growth of gram-positive microorganisms. Coliform colonies lower the pH of the medium subsequently causing their colonies to look red (Neutral Red Dye) and to precipitate the bile salts.