Bismuth Sulfite Powder, Microbiological Grade (CAS 71896-27-0)
Essential Selective Agent for Reliable Salmonella Detection
Catalog Number: ASC-1025

Introduction
Elevate your microbiological assays with Bismuth Sulfite Powder, a high-purity, microbiological grade compound renowned for its effectiveness in isolating Salmonella species. This specialized powder is a critical component in selective culture media, enhancing the accuracy and efficiency of microbial detection in clinical, food, and environmental samples.
Key Features
High Selectivity: Suppresses non-target organisms, specifically promoting the growth of Salmonella spp.
Quality Assured: Manufactured to microbiological grade standards for consistent and reliable results.
Versatile Application: Ideal for use in various selective media formulations.
Efficient Performance: Enhances the clarity and interpretability of microbial cultures.
Chemical Information
Chemical Name: Bismuth(III) sulfite oxide
Molecular Formula: Bi₂(SO₃)₃
Molecular Weight: 658.14 g/mol
Appearance: Fine, grayish-white powder
Solubility: Slightly soluble in water; soluble in mineral acids
Applications
1. Preparation of Bismuth Sulfite Agar (BSA)
Selective Medium: Bismuth Sulfite Powder is essential in formulating BSA, a medium specifically designed for the isolation of Salmonella spp., particularly Salmonella Typhi.
Diagnostic Clarity: Facilitates the formation of characteristic black colonies with metallic sheen due to hydrogen sulfide production by Salmonella, aiding in rapid identification.
2. Food and Beverage Industry
Quality Control: Integral in testing food products like poultry, dairy, and processed meats for Salmonella contamination, ensuring consumer safety.
Regulatory Compliance: Supports adherence to international food safety standards and regulations.
3. Clinical Diagnostics
Pathogen Isolation: Utilized in laboratories for detecting Salmonella in patient samples, crucial for diagnosing infections like typhoid fever.
Enhanced Accuracy: Improves the reliability of diagnostic results by inhibiting competing flora.
4. Environmental Monitoring
Water Testing: Assists in assessing water quality by detecting Salmonella in drinking water, wastewater, and recreational waters.
Sanitation Verification: Evaluates the effectiveness of cleaning protocols in healthcare and food processing facilities.
Advantages
Superior Selectivity: Effectively suppresses Gram-positive bacteria and many Gram-negative bacteria other than Salmonella.
Reliable Results: Consistent performance ensures reproducible outcomes across batches.
Ease of Use: Integrates seamlessly into standard laboratory protocols.
Cost-Effective: Offers an economical solution without compromising on quality.
Usage Guidelines
Media Preparation:
Accurately weigh the required amount of Bismuth Sulfite Powder as per your recipe.
Mix with other media components and sterilize appropriately. Note that overheating may reduce selectivity.
Avoid Autoclaving Finished Media:
Sterilize the basal medium separately and add Bismuth Sulfite Powder aseptically after cooling to below 50°C.
Storage:
Store the powder in a cool, dry place away from light.
Keep containers tightly closed to prevent moisture absorption and contamination.