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Main sol. 325

Internal Solution-ID: S600

Equipment needed: Autoclave Hungate tubes Filter Gassing station
Compound Amount Unit Conc. [g/L] Conc. [mM]
Na2SO4 3.00 g 2.994 21.079
KH2PO4 0.20 g 0.2 1.467
NH4Cl 0.30 g 0.299 5.597
NaCl 21.00 g 20.958 358.626
MgCl2 x 6 H2O 3.10 g 3.094 15.218
KCl 0.50 g 0.499 6.694
CaCl2 x 2 H2O 0.15 g 0.15 1.018
Trace element solution SL-10 1.00 ml - -
Sodium resazurin
(0.1% w/v)
0.50 ml 5.0e-4 0.002
Na2CO3 1.50 g 1.497 14.124
Na-caproate 1.40 g 1.397 10.114
Wolin's vitamin solution (10x) 1.00 ml - -
Na2S x 9 H2O 0.40 g 0.399 1.662
Distilled water 1000.00 ml - -
1 Dissolve ingredients (except carbonate, caproate, vitamins and sulfide), then sparge medium with 80% N2 and 20% CO2 gas mixture to make it anoxic. Dispense medium under same gas atmosphere into anoxic Hungate-type tubes or serum vials and autoclave. After sterilization add caproate, vitamins (sterilized by filtration) and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas and carbonate from a sterile anoxic stock solution prepared under 80% N2 and 20% CO2 gas mixture. Adjust pH of complete medium to 7.2 - 7.4, if necessary.
325 SYNTROPHOSPORA MEDIUM