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Main sol. J1033

Internal Solution-ID: S5086

Equipment needed: Anaerobic workbench Hungate tubes Autoclave
1 Mix components, except sulfur, bring to a boil and cool down under a CO2 (100%) gas stream. While gassing, add the following components to the medium:
Compound Amount Unit Conc. [g/L] Conc. [mM]
NaCl 18.000 g 17.476 299.037
MgCl2 x 6 H2O 4.330 g 4.204 20.678
NH4Cl 0.330 g 0.32 5.99
KCl 0.330 g 0.32 4.298
KH2PO4 0.165 g 0.16 1.177
CaCl2 x 2 H2O 0.033 g 0.032 0.218
Trace elements solution 10.000 ml - -
Sulfur
(powder)
5.000 g 4.854 151.368
Distilled water 1000.000 ml - -
Trace vitamins 10.000 ml - -
NaHCO3 2.000 g 1.942 23.114
2 Bubble CO2 for 3 - 4 min and check pH to be 6.5 - 6.8. Readjust pH to the range if necessary. Autoclave under a CO2 gas atmosphere. Add the following solution to the medium (separately autoclaved under N2):
KNO3
(1 M)
10.000 ml - -
3 Steam sulfur for 3 hr on each of 3 successive days. Aseptically and anaerobically distribute the medium into culture vessels containing appropriate amount of sulfur (e.g., 10 ml of the medium and 0.05 g sulfur in Hungate tubes) under a CO2 stream and seal with butyl rubber stoppers.
J1033 ST65 MEDIUM