# J698: ACIDIMICROBIUM MEDIUM ## Main sol. J698 0.5 g MgSO4 x 7 H2O 0.4 g (NH4)2SO4 0.2 g K2HPO4 0.1 g KCl 10 mg FeSO4 x 7 H2O 1000 ml Distilled water 1. Adjust pH to 2.0 with H2SO4. After autoclaving, add the following solution (autoclaved): 2.5 ml Yeast extract (10%, BD-Difco) 2. Comment: For autotrophic growth on ferrous sulfate, prepare the medium without yeast extract, add 13.9 g/L (final) FeSO4 x 7H2O and adjust pH to 1.7 with H2SO4.