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Main sol. 866

Internal Solution-ID: S1787

Equipment needed: Autoclave Hungate tubes Filter Gassing station
Compound Amount Unit Conc. [g/L] Conc. [mM]
KH2PO4 0.2 g 0.2 1.467
MgCl2 x 6 H2O 0.1 g 0.1 0.491
KCl 0.2 g 0.2 2.677
NH4Cl 1.0 g 0.998 18.658
Na2SO4 5.0 g 4.99 35.131
NaCl 5.0 g 4.99 85.387
Trace element solution SL-10 1.0 ml - -
Yeast extract 1.5 g 1.497 -
Sodium resazurin
(0.1% w/v)
0.5 ml 5.0e-4 0.002
Na2CO3 0.5 g 0.499 4.708
NaHCO3 8.0 g 7.984 95.04
Na-formate 5.0 g 4.99 73.375
Wolin's vitamin solution (10x) 1.0 ml - -
Na2S x 9 H2O 0.5 g 0.499 2.078
Distilled water 1000.0 ml - -
1 Dissolve the ingredients (except carbonate, bicarbonate, vitamins, formate and sulfide,) and sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic. Add and dissolve carbonate and bicarbonate, adjust pH to 8.8 - 9.0, then dispense under 100% N2 gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. Before use add vitamins (sterilized by filtration), formate and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas.
866 DESULFOFALX MEDIUM