KH2PO4 2.000 g (NH4)2SO4 2.000 g MgSO4 x 7 H2O 0.125 g NaCl 0.500 g FeSO4 x 7 H2O 0.002 g Distilled water 1000.000 ml pH 7.2. To the sterilised medium add sterile methanol (to a final concentration of 0.5%) or methylamine (to a final concentration of 0.3%).
