Scharlau Violet Red Bile Dextrose Agar (VRBD), Eur. Pharm.

Scharlau Violet Red Bile Dextrose Agar is a selective solid medium for enumerating enterobacteria. The manufacturer cites ISO 21528 and the Pharmacopoeial Harmonised Methods for the documented application context. The source also identifies the medium as MacConkey Dextrose Agar, VRBG Agar and VRBD Agar. These names are useful when matching the product to a written method that uses glucose or dextrose terminology. This is the enterobacteria enumeration formulation, distinct from the lactose agar product for coliform work. Reference 01-295-500 is the selected dehydrated medium; prepared plates, tubes and bottles on the family page have separate article references. The selected article is supplied as 500 g of dehydrated medium in a vacuum-wrapped flask. Prepare it and perform incubation, reading and quality-control checks according to the applicable laboratory procedure and manufacturer instructions.