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Merck

Violet Red Bile Lactose Agar (VRB agar) #101406, Merck

Product code: MX-11146

Violet Red Bile Lactose Agar (VRB agar) culture medium is used for enumerating coliform bacteria in food, water and other samples. This medium complies with ISO 4832, FDA-BAM and APHA, and contains crystal violet and bile salts to inhibit the growth of Gram-positive bacteria.

Used in:Food & beverageMicrobiology

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Product description

  • pH value: 7.3 - 7.5 (40 g/l, H₂O, 37 °C) (after autoclaving)
  • Bulk density: 670 kg/m3
  • Solubility: 39.5 g/l
  • Appearance (clearness): clear
  • Appearance (color): red
  • pH-value (25 °C): 7.2 - 7.6
  • Solidification behaviour (2 hrs., 45 °C): liquid