B176 

DUBOS BROTH BASE

Formula

Ingredients 

gms/lit.

Casein enzymic hydrolysate

L-Aspargine

Polysorbate 80 

Monopotassium phosphate 

Disodium phosphate 

Ferric ammonium citrate

Magnesium sulphate 

Calcium chloride 

Zinc sulphate 

Copper sulphate 

0.50

 2.00

0.20

1.00

2.50

0.05

0.01

0.0005

0.0001

0.0001

Final pH (at 25°C) : 6.6 + 0.2

Directions 

Suspend 1.3 gms. in 180 ml. distilled water containing 10 ml glycerol. Boil if necessary to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Cool to 50°C and aseptically add 20 ml sterile bovine albumin V or sterile serum to each 180 ml of broth base.

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