Strain modifications for Medium 520
2 distinct modifications were found.
Adjust pH of final medium to 8.0.
Use 5.00 g/l D-glucose as the substrate. Supplement medium after autoclaving with 0.50 g/l Na2S x 9 H2O added from a sterile anoxic stock solution prepared under 100% N2 gas and adjust pH of complete medium to 6.8 - 7.0, if necessary.