Supplemented with blood an excellent general purpose growth medium for fastidious organisms.

Columbia Blood Agar Base is usually prepared with horse, sheep, or rabbit blood to determine the hemolytic reactions of fastidious pathogenic microorganisms. Columbia Blood Agar Base can be prepared as Blood Agar or Chocolate Agar or used without blood as a general purpose medium. This medium contains a highly nutritious combination of peptones. The addition of starch enhances the recovery of Neisseria, and hemolytic reactions of some Streptococci.

Microbiological Analysis:
Escherichia coli ATCC 25922: As Reported
Pseudomonas aeruginosa ATCC 27853: As Reported
Staphylococcus aureus ATCC 25923: As Reported
Streptococcus pneumoniae ATCC 6305: As Reported
Streptococcus pyogenes ATCC 19615: As Reported

Appearance:
Beige, homogeneous, free flowing powder

Solubility/with SRBC:
Light amber, light haze/Red, opaque

pH:
7.3±0.2