SOB Agar (Powder)

Directions per Liter:

Dissolve 45.5 grams in 800-900ml of ddH2O stirring gently with heating until completely solubilized. Adjust pH of the medium to the desired level. Add additional water to bring the solution to1L. If required, add sodium bicarbonate. Dispense into appropriate containers, loosen caps and autoclave for 15 minutes at 121ºC (15psi).


Storage and Stability:

Store powdered media at RT. Opened bottles should be capped tightly and kept in a dark, low humidity environment. Prepared media should be kept at 4°C and used within a short period of time.


Component g/liter
Tryptone 20
Yeast Extract 5
Sodium Chloride 0.5
MgSO4•7H2O 5
Agar 15
Total: 45.50g/Liter
500g makes 11 liters