Supplemented with blood an excellent general purpose growth medium for fastidious organisms.||Description: |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 (25°C):|7.3±0.2||Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.