DSMZ 993b . MODIFIED ISP5 MEDIUM

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Equipment needed: Autoclave

Final pH: 7.2

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ml
Compound Amount Unit
Medium 993 1000.0 ml
Yeast extract 0.5 %
KCl 10.0 %
1 Prepare medium 993 supplemented with yeast extract (0.5 %) and KCl (10%). pH of the medium should be 7.2.

Main sol. 993 #

1000
Compound Amount Unit
L-Asparagine
(anhydrous basis)
1 g
Glycerol 10 g
K2HPO4
(anhydrous basis)
1 g
Distilled water 1000 ml
Trace element solution 1 ml
Agar 20 g
1 The pH of trace salts solution is about 7.0-7.4. Do not adjust if it is within this range. Liquefy agar by steaming at 100°C for 15-20 minutes.
2 Sterilize in flasks for pouring into Petri dishes. Seven standard 90 mm dishes containing 25 ml per dish.

Trace element solution #

100
Compound Amount Unit
FeSO4 x 7 H2O 0.1 g
MnCl2 x 4 H2O 0.1 g
ZnSO4 x 7 H2O 0.1 g
Distilled water 100.0 ml