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Main sol. J524

Internal Solution-ID: S4319

Equipment needed: Autoclave Filter
Compound Amount Unit Conc. [g/L] Conc. [mM]
NaCl 30.00 g 29.528 505.263
KH2PO4 0.14 g 0.138 1.013
CaCl2 x 2 H2O 0.80 g 0.787 5.356
MgSO4 x 7 H2O 3.40 g 3.346 13.577
MgCl2 x 6 H2O 4.20 g 4.134 20.334
KCl 0.33 g 0.325 4.357
NaNO3 0.25 g 0.246 2.895
NH4Cl 0.25 g 0.246 4.6
Na2SiO3 x 9 H2O 0.20 g 0.197 -
Fe2(SO4)3 x n H2O 20.00 mg 0.02 -
Na2SeO3 x 5 H2O 0.50 mg 4.9e-4 0.002
NiCl2 x 6 H2O 0.50 mg 4.9e-4 0.004
Trace mineral solution 3.00 ml - -
Distilled water 1000.00 ml - -
1 Mix components, adjust pH to 6.0 - 6.5 and autoclave. After cooling, add the following solutions (filter-sterilized) to the medium:
Trace vitamins 1.00 ml - -
NaHCO3
(5%)
10.00 ml - -
CuSO4
(1 mM)
2.00 ml - -
2 Distribute the medium into culture vessels (leave >80% volume gas phase) under a N2-CO2 (4:1) gas mixture and seal with butyl rubber stoppers. Pressurize the culture vessels to 200 kPa with methane gas. Finally add O2 gas to make up 2% O2 concentration in the gas phase. Readjust pH to 6.0 - 6.3, if necessary.
J524 METHANE OXIDIZING BACTERIUM MEDIUM