K2HPO4 2.56 g KH2PO4 2.08 g NH4Cl 1 g MgSO4.7H2O 0.5 g Sodium pyruvate 4 g Salt solution* 15 ml Agar 20 g Distilled water 1000 ml pH 7.0 *Salt solution: Ferric ammonium citrate 1 g CaCl2 0.1 g Distilled water 100 ml