B553 

HOFERS ALKALINE MEDIUM

Formula

Ingredients 

gms/lit.

Mannitol 

Dipotassium phosphate

Magnesium sulphate

Sodium chloride

Yeast extract

Thymol blue 

Agar 

10.00

0.50

0.20

0.10

1.00

0.0016

15.00

Final pH (at 25°C) : 11.0 + 0.2

Directions 

Suspend 26.8 gms in 1000 ml distilled water. Heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes.

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