Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia Specification

Flash Point
N/A

CAS No
N/A mixture

Melting Point
N/A

Packaging Type
Plastic Bottle

Molecular Formula
N/A mixture

Purity
N/A formulated medium

Physical State
Powder

Size
100g

Ph Level
7.4 0.2

Molecular Weight
N/A mixture Grams (g)

Shelf Life
4 Years

Density
Not specified Gram per cubic centimeter(g/cm3)

Usage
Laboratory

Boiling point
N/A

Grade
Microbiology Grade

Type
Scientific Lab Chemicals

Application
Laboratory

Appearance
Light yellow to pink powder

Purity(%)
N/A formulated medium

Violet Red Bile Agar 100g Himedia Trade Information

Minimum Order Quantity
25 Pieces

Payment Terms
Cash Advance (CA), Cash in Advance (CID), Days after Acceptance (DA)

Supply Ability
10 Pieces Per Day

Delivery Time
5 Days

Sample Available
No

Packaging Details
Plastic Bottle

Main Export Market(s)
Asia, Australia, Central America, North America, South America, Eastern Europe, Western Europe, Middle East, Africa

Main Domestic Market
All India

Certifications
Himedia

About Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar (VRBA) is a selective culture medium used to isolate, detect, and enumerate coliform bacteria, particularly in water, milk, dairy products, and clinical samples. It achieves this by inhibiting the growth of Gram-positive bacteria while allowing lactose-fermenting coliforms to grow and produce characteristic red colonies. Here's a more detailed breakdown:Composition and Principle:

Selective Agents:VRBA contains bile salts and crystal violet, which inhibit the growth of Gram-positive bacteria and some Gram-negative bacteria.
Indicator:Neutral red acts as a pH indicator. When lactose is fermented by coliforms, acid is produced, causing the neutral red to turn red, resulting in red or pink colonies.
Lactose:This is the fermentable sugar that coliforms utilize, producing acid and leading to the color change.
Agar:This provides a solidifying agent for the medium.

Applications:

Water and Dairy Products:VRBA is widely used in the analysis of water, milk, and other dairy products to detect and quantify coliform bacteria, which are indicators of potential fecal contamination.
Clinical Samples:It can also be used in clinical settings to isolate and identify coliforms from various samples.
Food Safety:It's also used in food microbiology to assess the quality and safety of food products.

Increasing Selectivity:

Anaerobic Incubation: Incubating VRBA under anaerobic conditions can further suppress the growth of facultative anaerobes, enhancing the selectivity for coliforms.
Elevated Temperatures: Incubation at temperatures above 42C can also improve selectivity.

Interpretation:

Lactose Fermenters:Coliforms that ferment lactose produce red or pink colonies, often surrounded by a reddish zone due to bile precipitation.
Non-Lactose Fermenters:Bacteria that do not ferment lactose will produce colorless or pale colonies.

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

Violet Red Bile Agar 100g Himedia

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