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Main sol. 889

Internal Solution-ID: S1839

Equipment needed: Autoclave
Compound Amount Unit Conc. [g/L] Conc. [mM]
NaCl 20.00 g 20 342.231
MgSO4 x 7 H2O 7.00 g 7 28.4
MgCl2 x 6 H2O 5.50 g 5.5 27.053
KCl 0.65 g 0.65 8.719
NaBr 0.10 g 0.1 0.972
NH4Cl 0.30 g 0.3 5.609
K2HPO4 0.20 g 0.2 1.148
CaCl2 x 2 H2O 0.50 g 0.5 3.401
Modified Wolin's mineral solution II 10.00 ml - -
Yeast extract 0.20 g 0.2 -
Sulfur
(powdered)
5.00 g 5 155.909
Distilled water 1000.00 ml - -
1 Adjust pH to 7.0 using H2SO4.
2 Prepare the medium under H2 gas and fill 20 ml medium into 100 ml serum bottles and seal with a rubber stopper. Steam/heat the medium in an almost boiling waterbath for 3 hours on each of 3 successive days to sterilize.
3 Add bicarbonate from a autoclaved and neutralized stock solution.
NaHCO3 2.00 g/l 2 23.808
4 Check pH and adjust accordingly.
5 Give an atmosphere of H2/CO2/O2 (78/20/2) with an overpressure of two atmospheres.
889 ISS1 MEDIUM