B117 

BLOOD AGAR BASE NO.2 ( WITH 1.2% AGAR ) 

Formula

Ingredients 

gms/lit.

Proteose peptone 

Liver extract 

Yeast extract 

Sodium chloride 

Agar 

15.00

2.50

5.00

5.00

12.00

Final pH (at 25°C) : 7.4 + 0.2

Directions 

Suspend 19.75 gms. in 500 ml. distilled water. Boil to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121° C) for 15 minutes. Cool to 40 – 50 °C and aseptically add 7% v/v sterile defibrinated blood.

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