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Description
Oxoid™ Violet Red Bile Agar (VRBA) (500g) is a selective medium used for the detection and enumeration of coliform bacteria, particularly in food, dairy, and water samples. It is designed to support the growth of Gram-negative, lactose-fermenting coliforms while inhibiting Gram-positive organisms.
Key Features:
- Form: Dehydrated powder
- Weight: 500g
- Application: Detection and enumeration of coliform bacteria in food, dairy, and water testing
- Composition: Contains bile salts and crystal violet to suppress Gram-positive bacteria; lactose and neutral red indicator for differentiation based on lactose fermentation
- Preparation: Suspend 41.5g in 1 liter of distilled water, mix thoroughly, and heat to boiling to dissolve completely. Do not autoclave. Cool to 45–50°C before pouring.
- Yield: Approximately 12 liters of prepared medium
- Storage: Store the dehydrated medium at 10–30°C, protected from moisture and light
- Compliance: Conforms to standard microbiological methods for coliform testing in food and water quality control.
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