B595 

LOEFFLER MEDIUM BASE

Formula

Ingredients 

gms/lit.

Peptone, special

Beef extract 

Sodium chloride 

Dextrose 

2.50

2.50

1.25

2.50

Final pH (at 25°C) : 7.3 + 0.2

Directions 

Suspend 8.8 gms. in 250ml. distilled water. Dissolve the medium completely and sterilize by autoclaving at 10 lbs pressure (115°C) for 20 minutes. Cool to 50-55°C and aseptically add 750 ml of sterile horse serum (BF021). Mix well and aseptically dispense into sterile tubes. Sterilize the medium by inspissation at 80-85°C for 2 hours in free flowing steam for at least 3 consecutive days.

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