B479 

CYSTINE TELLURITE AGAR BASE

Formula

Ingredients 

gms/lit.

Beef heart, infusion from 

Tryptose 

Sodium chloride 

L-Cystine 

Agar 

500.00

10.00

5.00

0.05

15.00

Final pH (at 25°C) : 7.4 + 0.2

Directions 

Suspend 40 gms. in 90 ml. distilled water. Heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15lbs pressure (121°C) for 15 minutes. Cool to 50°C and aseptically add 5% v/v sterile defib- rinated sheep blood and 5% v/v of 1.0% Potassium Tellurite. Mix well and pour into sterile petri plates.

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