| | Soluble starch | 10 | g | | | K2HPO4 (anhydrous base) | 1 | g | | | MgSO4·7H2O | 1 | g | | | NaCl | 1 | g | | | (NH4)2SO4 | 2 | g | | | CaCO3 | 2 | g | | | Trace salts solution* | 1 | ml | | | Bacto Agar (Difco) | 20 | g | | | Distilled water | 1 | L | | | The unadjusted pH should be 7.0 - 7.4 | | | | | | | | | | | | | *Trace salts solution | | | | | FeSO4·7H2O | 0.1 | g | | | | | MnCl2·4H2O | 0.1 | g | | | | | ZnSO4·7H2O | 0.1 | g | | | | | Distilled water | 100 | ml | |