Condalab 4670 | Violet Red Bile Agar With Glucose (VRBG) EP/USP/ISO Pack of 10 x 200 ml Flask

At InnScience, we take pride in offering top-tier microbiological products, including Condalab's renowned Violet Red Bile Glucose Agar (VRBG). This exceptional selective solid medium is designed for precise enumeration of enterobacteria, meticulously crafted to adhere to ISO standard 21528 and Pharmacopeial Harmonized Methods.

Specifications:

• Shelf Life: 12 months
• Storage: 8-25ºC
• Packaging: 10 prepared bottles, each containing 250 ml, secured with a non-injectable metal cap.

Presentation: Our VRBG is expertly composed to provide optimal results:

• Yeast extract: 3.000 g/l
• Peptone from gelatin: 7.000 g/l
• Salts bile: 1.500 g/l
• D(+) Glucose: 10.000 g/l
• Sodium chloride: 5.000 g/l
• Neutral red: 0.030 g/l
• Crystal violet: 0.002 g/l
• Agar: 13.000 g/l

Description: VRBG represents an innovative modification of the Violet Red Bile Agar and the MacConkey Agar techniques initially devised by Mossel et al. This unique formulation includes glucose, enhancing both the growth of fastidious enterobacteria and the recovery of those subjected to adverse conditions. By removing lactose while retaining glucose, the medium's efficiency remains unwavering.

Technique: Our VRBG supports precise microbiological analysis with the following steps:

1. Collect, dilute, and prepare samples as required by official standards and specifications.
2. Melt the medium in bottles using a water bath (100ºC) or a microwave, ensuring careful temperature control.
3. Pour the cooled medium into Petri dishes.
4. Solidify on a flat surface and use streaking or spiral methods for plate preparation.
5. Incubate the plates aerobically at 35ºC±2.0 for 24 hours, adjusting based on specific sample requirements.
6. Enumerate reddish-violet colonies with a red-violet halo, indicative of bile salts precipitation.
7. Confirm presumptive isolation of E. coli or coliforms with additional microbiological and biochemical tests.
8. Calculate the total microbial count per ml of the sample.

Quality Control: Our commitment to quality assurance is evident through rigorous physical, chemical, and microbiological controls:

• Color: Violet-pink
• pH: 7.4 ± 0.2 at 25ºC
• Microbiological control with select microorganisms, ensuring product reliability.

InnScience is your trusted source for Condalab's VRBG and other microbiological products. Elevate your laboratory's precision with our dependable solutions. Contact us today to enhance your microbiological testing capabilities.

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