Description
Specifications Table
| Product Name | BARRITT’S REAGENT ‘A’ FOR VP TEST |
|---|---|
| Pack Size | 500 mL |
| Form | Liquid |
| Grade | Laboratory Grade |
| Application | Voges-Proskauer (VP) test for bacterial identification |
Product Description
Barritt’s Reagent A is a critical component in the Voges-Proskauer (VP) test, a biochemical assay used to differentiate bacteria based on their ability to produce acetoin. This reagent, when combined with Barritt’s Reagent B, helps detect acetoin formation, which is a key metabolic byproduct in certain bacterial species. Widely used in clinical and research laboratories, this reagent ensures reliable and consistent results for microbial identification.
The VP test is particularly important in distinguishing between Enterobacteriaceae members, such as Klebsiella and Enterobacter, which are acetoin-positive, from non-producers like E. coli. Barritt’s Reagent A contains alpha-naphthol, which reacts with acetoin in the presence of potassium hydroxide (Reagent B) to produce a characteristic red color, confirming a positive result.
At eqipped, we provide high-quality Barritt’s Reagent A sourced from Loba Chemie, ensuring purity and accuracy for your laboratory needs. Whether you’re a student, researcher, or educator, this reagent is an essential tool for your microbiology experiments.
How to Use Barritt’s Reagent A for VP Test
Performing the VP test is straightforward with the right reagents. Here’s a step-by-step guide:
- Inoculate the test organism in a suitable broth medium and incubate for 24–48 hours.
- Add 1 mL of Barritt’s Reagent A (alpha-naphthol solution) to the culture.
- Follow with 0.5 mL of Barritt’s Reagent B (potassium hydroxide solution).
- Shake the tube gently and allow it to stand for 10–30 minutes.
- Observe for a red coloration, indicating a positive VP test result.
For best results, ensure the culture is fresh and the reagents are properly stored. Barritt’s Reagent A should be kept in a cool, dark place to maintain its efficacy.
Why the VP Test Matters in Microbiology
The Voges-Proskauer test is a fundamental tool in bacterial identification, helping differentiate species based on their metabolic pathways. Acetoin production is a key characteristic of certain bacteria, and the VP test provides a simple yet effective way to confirm this trait. This is particularly useful in clinical diagnostics, food microbiology, and research settings where accurate identification is crucial.
By using Barritt’s Reagent A from eqipped, you can trust in the consistency and reliability of your test results. Our reagent is manufactured to strict quality standards, ensuring it meets the demands of professional and academic laboratories alike.
Storage and Handling
To maintain the integrity of Barritt’s Reagent A, store it in a tightly sealed container away from direct sunlight and heat. The reagent should be used within its specified shelf life for optimal performance. Always handle with care, using appropriate personal protective equipment (PPE) such as gloves and goggles.
If you’re looking to buy Barritt’s Reagent A online, eqipped offers a seamless shopping experience with fast delivery across India. Our platform is trusted by students, researchers, and educators for high-quality lab supplies.
FAQs
What is Barritt’s Reagent A used for?
Barritt’s Reagent A is used in the Voges-Proskauer (VP) test to detect acetoin production in bacteria, helping identify species like Klebsiella and Enterobacter.
How do I perform the VP test with Barritt’s Reagent A?
Add 1 mL of Barritt’s Reagent A to the bacterial culture, followed by 0.5 mL of Barritt’s Reagent B. A red color indicates a positive result.
Can I buy Barritt’s Reagent A online in India?
Yes, you can buy Barritt’s Reagent A online from eqipped, a trusted supplier of lab chemicals and reagents in India.
What is the shelf life of Barritt’s Reagent A?
The reagent typically has a shelf life of 12–24 months when stored properly in a cool, dark place.
Is Barritt’s Reagent A safe to handle?
While generally safe, it should be handled with care. Wear gloves and goggles, and avoid skin or eye contact.
