Agar, Select - 7558
Intended Use:
Agar, Select is a high-quality solidifying agent specifically designed for the preparation of microbiological culture media.
Product Summary and Explanation:
Agar, an essential phycocolloid, is derived from red-purple algae, primarily Gelidium spp. Pioneering microbiologist Fannie Hesse first proposed its use in microbiological applications in 1881. By the early 20th century, agar had become the preferred gelling agent over gelatin due to its ability to maintain firmness at elevated growth temperatures, crucial for isolating many pathogenic organisms. Furthermore, agar exhibits remarkable resistance to degradation by bacterial enzymes, facilitating the study of pure cultures and greatly advancing the field of microbiology.
Agar, Select features unique thermal properties: it remains gelled at room temperature and maintains its structure at temperatures reaching 65°C. Melting occurs at approximately 85 - 91°C, while solidification takes place within the range of 34 - 36°C, highlighting its hysteresis property. Despite its resistance to shear forces, variations in gel strength and stiffness may occur across different agar products.
Key Specifications:
Agar, Select boasts excellent clarity and precise control over both gelation and melting temperatures. Its diffusion characteristics are optimized to ensure a consistent experience across applications. Crucially, it is free from bacterial inhibitors while containing beneficial minerals, including calcium and magnesium, to support microbial growth.
Recommended Applications:
Agar, Select is aptly suited for a variety of applications such as clinical testing, auxotrophic studies, bacterial and yeast transformation studies, and molecular genetics research involving bacteria.
