B889 

LISTERIA OXFORD MEDIUM BASE

Formula

Ingredients 

gms/lit.

Peptone, special 

Lithium chloride 

Sodium chloride 

Corn starch 

Esculin 

Ammonium ferric citrate 

Agar 

23.00

15.00

5.00

1.00

1.00

0.50

10.00

Final pH (at 25°C) : 7.0 + 0.2

Directions 

Suspend 27.75 gms. in 500ml. distilled water. Heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Cool to 45-50°C and aseptically add the rehydrated contents of 1 vial Oxford Listeria Supplement (BF073).Mix well before pouring into sterile petri plates.

Print This Page

Close Window