Description
Specifications Table
| Product Name | Selenite Cystine Medium (Twin Pack) | M025-100G | Himedia |
|---|---|
| Quantity/Pack Size | 100 gm – Twin Pack |
| Form | Powder |
| Grade | Microbiology Grade |
| Application | Selective enrichment for Salmonella isolation in food and clinical samples |
Product Description
What is Selenite Cystine Medium?
Selenite Cystine Medium is a specialized microbiological medium designed for the selective enrichment of Salmonella species from clinical, food, and environmental samples. This medium contains sodium selenite and L-cystine, which inhibit the growth of Gram-positive and many Gram-negative bacteria while allowing Salmonella to thrive. The twin pack format ensures you have an extra supply for uninterrupted experiments.
The medium is widely used in microbiology labs for diagnostic and research purposes. Its formulation adheres to strict quality standards, making it a reliable choice for professionals and students alike.
How Does Selenite Cystine Medium Work?
Selenite Cystine Medium works by creating a selective environment where Salmonella can multiply while other bacteria are suppressed. Sodium selenite acts as a selective agent, inhibiting the growth of competing microorganisms. L-cystine neutralizes the toxic effects of selenite on Salmonella, allowing it to grow selectively. This dual-action mechanism makes the medium highly effective for isolating Salmonella from mixed cultures.
After inoculation, samples are incubated at 37°C for 18-24 hours. Post-incubation, the enriched sample is streaked onto selective agars like MacConkey or XLD for further identification.
Applications of Selenite Cystine Medium
This medium is primarily used in food microbiology, clinical diagnostics, and water testing. Researchers and lab technicians rely on it for detecting Salmonella in food products, dairy, meat, and environmental samples. It is also a staple in educational settings where students learn about bacterial isolation techniques.
For labs conducting routine Salmonella screening, Selenite Cystine Medium is an indispensable tool. Its ease of use and high specificity make it ideal for both small-scale and large-scale testing.
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Storage and Preparation Guidelines
To maintain the medium’s efficacy, store it in a cool, dry place away from direct sunlight. The powder should be kept in its original packaging, tightly sealed to prevent moisture absorption. Once prepared, the medium can be stored at 2-8°C for up to a month, though fresh preparation is recommended for optimal results.
For preparation, suspend 23.5 grams of the powder in 1 liter of distilled water. Heat gently to dissolve, then sterilize by autoclaving at 121°C for 15 minutes. Cool to 45-50°C before use.
Why This Medium is Trusted by Labs Across India
Himedia’s Selenite Cystine Medium is manufactured under stringent quality control measures, ensuring consistent performance. The twin pack of 100 gm each offers convenience and cost-effectiveness, reducing the need for frequent reordering. Whether you are a student working on a project or a researcher conducting critical experiments, this medium delivers reliable results every time.
eqipped brings you this premium product with the assurance of authenticity and fast shipping. Our platform is designed to make lab supply procurement hassle-free for Indian buyers.
Safety and Handling
Risk Note: Sodium selenite is toxic if ingested or inhaled. Handle with care using appropriate personal protective equipment (PPE) such as gloves and a lab coat. Work in a well-ventilated area or under a fume hood. In case of accidental ingestion or contact with skin/eyes, seek immediate medical attention.
Order Selenite Cystine Medium twin pack today and ensure your lab is always stocked.
FAQs
What is the purpose of Selenite Cystine Medium?
Selenite Cystine Medium is used for the selective enrichment of Salmonella species from samples, allowing them to grow while inhibiting other bacteria.
How do I prepare Selenite Cystine Medium?
Dissolve 23.5 grams of the powder in 1 liter of distilled water, heat to dissolve, autoclave at 121°C for 15 minutes, and cool before use.
Can this medium be used for other bacteria besides Salmonella?
No, Selenite Cystine Medium is specifically formulated for Salmonella and is not suitable for general bacterial culture.
What is the shelf life of Selenite Cystine Medium?
The powder has a shelf life of 3 years from the date of manufacture when stored properly. Prepared medium should be used within a month if refrigerated.
Where can I buy Selenite Cystine Medium online in India?
You can buy Selenite Cystine Medium online at eqipped, a trusted supplier of lab chemicals and microbiology media with pan-India delivery.
