A very nutritious general-purpose medium based on Columbia Agar Base enriched with 7% Sheep Blood, suitable for the isolation of most organisms including most fastidious anaerobes of clinical significance. Many workers claim that β haemolysis is more readily apparent, particularly in group A streptococci, when Sheep Blood is used in place of Horse Blood.
Columbia Agar Base with 7% Defibrinated Sheep Blood
|Shelf Life (days)
|Storage Temp (°C)
|Small grey colonies
|White colonies with β-haemolysis