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Columbia CNA Agar (Colistin and Nalidixic Acid), for the selective isolation of Gram positive bacteria, 15x100mm plate, order by the package of 100 plates, by Hardy Diagnostics

(Columbia Agar Base with 5% Sheep Blood, with the selective antibiotics; Colistin and Nalidixic acid)


  • For the selective cultivation and isolation of Gram positive bacteria; and for the determination of characteristic hemolytic reactions. Gram negative bacteria are inhibited by the colistin and nalidixic acid.

  • Contains 5% sheep blood from a veterinary supervised, controlled herd of donor animals. Blood is guaranteed to be from healthy antibiotic-free animals.

  • Polystyrene Petri plates feature raised rings for stacking ability and prevents sliding.

  • Packaged in sleeves of 10 plates (100 plates in a box) in a "breathable" celluose bag that prevents build-up of condensation and excess moisture.

  • The Hardy Diagnostics manufacturing facility and quality management system have achieved ISO 13485 certification as a medical device manufacturer.

  • See below to view a technical data sheet, MSDS, and various color brochures.

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Cat No. Description Price Curr UOM Qty  
A50BX Columbia CNA
HDx,15x100mm plt,100/BX R
$176.37 USD P100

Manufacturer Category Organism
Hardy Diagnostics: prepared media

Media, Prepared


Instructions for Use Video SDS


Brochures and Studies BioSafety Level