# 1161: DUBOS SALTS MEDIUM ## Main sol. 1161 0.5 g NaNO3 1 g K2HPO4 0.5 g MgSO4 x 7 H2O 0.5 g KCl 10 mg FeSO4 x 7 H2O 15 g Agar 1000 ml Distilled water 1. Adjust to pH 7.2. Autoclave at 121°C/15 min. Dispense into slopes. When the agar has solidified, place a strip of sterile filter paper on to the surface of each slope. Inoculate on to the filter paper.