B122

BREWER THIOGLYCOLLATE MEDIUM 

Formula 

B122 

Ingredients 

gms/lit.

Proteose peptone

Beef, infusion from 

Dextrose 

Sodium chloride 

Dipotassium phosphate 

Sodium thioglycollate 

Methylene blue 

Agar 

10.00

500.00

5.00 

5.00 

2.00 

0.50 

0.002 

0.50 

Final pH (at 25°C) : 7.2 + 0.2

Directions 

Suspend 40.5 gms. of B122 in 1000 ml. distilled water. Boil to dissolve the medium completely. Dispense in tubes or in suitable containers as desired and sterilize by autoclaving at 15lbs pressure (121°C) for 15 minutes.

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