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Violet Red Bile Agar (VRB)


A selective medium for the detection and enumeration of coliform bacteria, especially the coliaerogenes-group in water, and dairy products


Yeast Extract 3g

Enzymatic Digest of Gelatin 7g

Bile Salts Mixture 1.5g

Lactose 10g

Sodium Chloride 5g

Neutral Red 0.03g

Crystal Violet 0.002g

Agar 15g

Final pH: 7.4 ± 0.2 at 25°C


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