DSMZ 925 . ALKALIPHILIC SULPHUR RESPIRING STRAINS MEDIUM

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Equipment needed:

Final pH: 10.0

Select a strain (optional):

ml
Compound Amount Unit
Na2CO3 20 g
NaHCO3 10 g
NaCl 5 g
K2HPO4 1 g
Trace element solution 2 ml/l
Distilled water 1000 ml
1 Sterilize at 110°C 20 min in a closed vessel (i.e. a serum tube or bottle). pH after sterilization will about 10.
2 After sterilization add:
MgCl2 x 6 H2O
(200.0 g/l)
1 ml/l
3 (a white colloid will form which will rapidly dissolve after mixing)

Trace element solution #

1000
Compound Amount Unit
EDTA 5 mg
FeSO4 x 7 H2O 2 mg
ZnSO4 x 7 H2O 100 mg
MnCl2 x 4 H2O 30 mg
CoCl2 x 6 H2O 200 mg
NiCl2 x 6 H2O 20 mg
Na2MoO4 x 2 H2O 30 mg
CuCl2 x 2 H2O 10 mg
H3BO3 300 mg
Distilled water 1000 ml
1 Final pH should be 3, add HCl if needed. Sterilization - 120°C 20 min.