Oatmeal 20 g
Trace salts solution* 1 ml
Agar (if needed) 18 g
Distilled water 1000 ml
pH 7.2
* FeSO4.7H2O 0.1 g
MnCl2.4H2O 0.1 g
ZnSO4.7H2O 0.1 g
Distilled water 100 ml
Soluble starch 10 g
K2HPO4 (anhydrous base) 1 g
MgSO4.7H2O 1 g
NaCl 1 g
(NH4)2SO4 2 g
CaCO3 2 g
FeSO4.7H2O 0.001 g
MnCl2.7H2O 0.001 g
ZnSO4.7H2O 0.001 g
Bacto Agar (if needed) 20 g
Distilled water 1000 ml
The unadjusted pH should be 7 - 7.4.