Selective Medium for Enumeration of Lactose-Fermenting Coliforms

VRBL Agar (Violet Red Bile Lactose Agar) is a selective and differential culture medium used for the enumeration of lactose-fermenting coliform bacteria, particularly in food and beverage samples. It is recommended by ISO 4832 and widely applied in food microbiology and quality control laboratories.

 Key Components:

• Lactose – For differentiation based on fermentation

• Bile Salts – Inhibit non-target Gram-positive organisms

• Crystal Violet – Enhances selectivity against Gram-positive bacteria

• Neutral Red – pH indicator for acid production from lactose

• Agar – Solidifying agent

 High-Performance Medium by biolab

Manufactured by biolab, a leading German brand known for consistent and reliable microbiological media. In Iran, VRBL Agar is exclusively distributed by Fardad Azma Rad, the authorized representative of biolab.

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