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Violet Red Bile Agar

Violet Red Bile Agar
Violet Red Bile Agar
Violet Red Bile Agar

Violet Red Bile Agar Specification

  • Flash Point
  • Not Applicable
  • Storage Instructions
  • 10 30 C in a dry place.
  • Molecular Formula
  • Not Applicable
  • Ph Level
  • 7.4 0.2 at 25 C
  • Boiling point
  • Not Applicable
  • Density
  • Not Applicable Gram per cubic centimeter(g/cm3)
  • Physical State
  • powder
  • Molecular Weight
  • Not Applicable Grams (g)
  • Size
  • 500gm
  • Shelf Life
  • 48 Months
  • Packaging Type
  • plastic bottle
  • Usage
  • Laboratory and microbiological testing purposes only.
  • Purity
  • Not Applicable
  • Melting Point
  • Not Applicable
  • CAS No
  • 548-62-9
  • Grade
  • AR (Analytical)
  • Type
  • Other
  • Application
  • laboratory
  • Appearance
  • Light yellow to pink homogeneous free-flowing powder.
  • Purity(%)
  • Not Applicable
 

Violet Red Bile Agar Trade Information

  • Minimum Order Quantity
  • 1 Piece
  • Payment Terms
  • Cash in Advance (CID)
  • Supply Ability
  • 1 Piece Per Day
  • Delivery Time
  • 1 Days
  • Sample Policy
  • Contact us for information regarding our sample policy
  • Packaging Details
  • plastic bottle
  • Main Export Market(s)
  • Asia, Australia, Central America, Eastern Europe, Western Europe, Middle East, Africa, North America, South America
  • Main Domestic Market
  • All India
  • Certifications
  • Violet Red Bile Agar
 

About Violet Red Bile Agar

Violet Red Bile Agar (VRBA) is a selective microbiological medium used to detect and count coliform bacteria (Enterobacteriaceae) in water, dairy, and food products, inhibiting Gram-positive bacteria with bile salts and crystal violet, while lactose and neutral red indicator reveal lactose fermenters as pink/red colonies with purple halos, signaling acid production. Key Components & Function
  • Selective Agents: Bile salts and crystal violet inhibit most Gram-positive bacteria, allowing Gram-negative Enterobacteriaceae to grow.
  • Nutrients: Peptone and yeast extract provide essential carbon, nitrogen, vitamins, and amino acids.
  • Carbohydrate: Lactose serves as the fermentable sugar.
  • pH Indicator: Neutral red changes color with pH drops caused by fermentation, turning colonies red/pink and creating a reddish halo.
  • Osmotic Balance: Sodium chloride maintains osmotic equilibrium. 
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