DSMZ 1699 . SULFURIMONAS CRATERIS MEDIUM

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Equipment needed: Autoclave Filter Gassing station Hungate tubes

Final gas composition: 80 % N2 20 % CO2 read more

Final pH: 7.5 - 8.0

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ml
Compound Amount Unit
Solution A 981 ml
Solution B 25 ml
Solution C 1 ml
1 Dissolve compounds of solution A except sulfur and sparge it with 80% N2 and 20% CO2 gas mixture for 30 - 45 min to make it anoxic. Distribute under 80% N2 and 20% CO2 gas atmosphere into anoxic Hungate-type tubes or serum vials that contain the appropriate amount of sulfur and autoclave at 110°C for 20 min. Solution B is autoclaved under 80% N2 and 20% CO2 gas atmosphere. Solution C is prepared under 100% N2 gas and sterilized by filtration. To complete the medium appropriate amounts of solutions B and C are added to the sterile solution A in the sequence as indicated. Adjust pH of complete medium to 7.5 - 8.0, if necessary.

Solution A #

981
Compound Amount Unit
KH2PO4 0.20 g
NH4Cl 0.25 g
NaCl 10.00 g
MgCl2 x 6 H2O 0.40 g
KCl 0.50 g
CaCl2 x 2 H2O 0.15 g
NaNO3 0.85 g
Modified Wolin's mineral solution 1.00 ml
Sulfur
(powdered)
5.00 g
Distilled water 980.00 ml

Solution B #

25
Compound Amount Unit
Na2CO3 1.25 g
Distilled water 25.00 ml

Solution C #

1
Compound Amount Unit
Wolin's vitamin solution (10x) 1 ml

Modified Wolin's mineral solution #

1000
Compound Amount Unit
Nitrilotriacetic acid 1.50 g
MgSO4 x 7 H2O 3.00 g
MnSO4 x H2O 0.50 g
NaCl 1.00 g
FeSO4 x 7 H2O 0.10 g
CoSO4 x 7 H2O 0.18 g
CaCl2 x 2 H2O 0.10 g
ZnSO4 x 7 H2O 0.18 g
CuSO4 x 5 H2O 0.01 g
AlK(SO4)2 x 12 H2O 0.02 g
H3BO3 0.01 g
Na2MoO4 x 2 H2O 0.01 g
NiCl2 x 6 H2O 0.03 g
Na2SeO3 x 5 H2O 0.30 mg
Na2WO4 x 2 H2O 0.40 mg
Distilled water 1000.00 ml
1 First dissolve nitrilotriacetic acid and adjust pH to 6.5 with KOH, then add minerals. Adjust final to pH 7.0 with KOH.