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Main sol. 377a

Internal Solution-ID: S718

Equipment needed: Hungate tubes Filter Gassing station Autoclave
Compound Amount Unit Conc. [g/L] Conc. [mM]
NaCl 30.00 g 29.97 512.834
MgSO4 x 7 H2O 3.50 g 3.497 14.186
MgCl2 x 6 H2O 2.75 g 2.747 13.513
KCl 0.33 g 0.33 4.422
NaBr 0.05 g 0.05 0.485
H3BO3 15.00 mg 0.015 0.242
SrCl2 x 6 H2O
(0.1% w/v)
7.00 ml 0.007 0.026
(NH4)2SO4 10.00 mg 0.01 0.076
Citric acid
(0.1% w/v)
5.00 ml 0.005 0.026
KI
(0.01% w/v)
0.50 ml 5.0e-5 1.9e-4
CaCl2 x 2 H2O 0.75 g 0.749 5.096
KH2PO4 0.50 g 0.5 3.671
NiCl2 x 6 H2O
(0.1% w/v)
2.00 ml 0.002 0.015
Modified Wolin's mineral solution 10.00 ml - -
Sodium resazurin
(0.1% w/v)
0.50 ml 5.0e-4 0.002
Sulfur
(powdered)
30.00 g 29.97 934.519
Peptone
(BD Bacto)
5.00 g 4.995 -
Yeast extract
(OXOID)
1.00 g 0.999 -
Wolin's vitamin solution (10x) 1.00 ml - -
Neutralized sulfide solution 3% (w/v) 15.00 ml - -
Distilled water 960.00 ml - -
1 Dissolve ingredients except sulfur, peptone, yeast extract, vitamins, and sulfide, adjust the pH to 6.5 and sparge medium with 100% N2 gas for 30 - 45 min to make it anoxic. Distribute medium under the same gas atmosphere into anoxic Hungate-type tubes or serum vials that already contain the appropriate amount of sulfur. Sterilize the medium by autoclaving at 110°C for 20 min. After sterilization add peptone, yeast extract, and vitamins from sterile stock solutions prepared under 100% N2 gas atmosphere and sulfide from a neutralized stock solution. Vitamins should be sterilized by filtration.
377a PALAEOCOCCUS MEDIUM