Oxoid™ Violet Red Bile Glucose Agar (VRBGA) (ISO) 500g

Violet Red Bile Glucose (VRBG) Agar (ISO) (Dehydrated) is a selective medium used for the enumeration of Enterobacteriaceae in food, animal feed and environmental samples. Formulated in accordance with ISO 21528 and ISO 11133:2014, it is widely used in food microbiology to assess hygiene standards, product quality and potential contamination during production.

The medium contains bile salts and crystal violet to inhibit Gram-positive organisms, allowing selective recovery of Enterobacteriaceae. Glucose fermentation produces purple-pink colonies, often surrounded by a precipitated bile halo, making results clear and easy to interpret.

Key Features:

Form: Dehydrated powder
Weight: 500g
Application: Enumeration of Enterobacteriaceae in food, feed and environmental samples
Standards: ISO 21528 and ISO 11133:2014 compliant
Composition: Contains bile salts, crystal violet, neutral red indicator and glucose for selective growth and colony differentiation
Preparation: Dissolve in distilled water and sterilise as per protocol