Columbia CNA Agar Dehydrated Culture Media

The medium's primary selective agents are Colistin and Nalidixic Acid, a powerful antibiotic combination that effectively inhibits Gram-negative organisms while allowing your target bacteria to thrive. As an agar base, Columbia CNA Agar requires the aseptic addition of 5% sterile defibrinated blood to become a complete medium. This addition not only provides a nutrient-rich base for fastidious organisms but also enables you to observe hemolytic reactions, which are of indicative value for identification.

Please note: This product is not intended for use in the diagnosis of disease or other conditions in humans.

Features:

• Used with blood for the selective isolation of Gram-positive cocci
• Contains Colistin and Nalidixic Acid to suppress Gram-negative bacteria
• Variation of Columbia Blood Agar Base with enhanced selectivity
• Requires the addition of 5% sterile defibrinated blood for a complete medium
• Nutrient-rich formula to support the growth of fastidious organisms

Specifications:

• Brand: Neogen® Culture Media
• Analyte: Gram-positive cocci
• Platform: Dehydrated Culture Media
• Mass: 500 g
• Preparation: Suspend 43 g of medium in one liter of purified water, autoclave, cool to 45-50°C, and aseptically add 5% sterile defibrinated blood

Cross Reference:

• Acumedia: Columbia CNA Agar (7126)
• BD / Difco: N/A
• BD / BBL: 212104
• Oxoid: CM0331
• Merck: N/A