Ingredients (DMB trace) | Amount (per liter DMB-trace) | Ingredients (modified Wolfe’s trace) | Amount (per liter modified Wolfe’s trace) |
---|---|---|---|
Nitrilotriacetic acid | 12.8Â g | Nitrilotriacetic acid | 1.5Â g |
 |  | MgSO4.7H2O | 3.0 g |
 |  | NaCl | 1.0 g |
FeCl2 .4H2O | 1 g | FeSO4·7H2O | 0.1 g |
MnCl2 .4H2O | 0.5 g | MnSO4·H2O | 0.5 g |
CoCl2 .6H2O | 0.3 g | CoCl2·6H2O | 0.1 g |
 |  | CaCl2 | 0.1 g |
CuCl4 .2H2O | 0.05 g | ZnSO4·7H2O CuSO4·5H2O AlK(SO4)2·12H2O | 0.1 g 0.01 g 0.01 g |
Na2MoO4 .2H2O | 0.05 g | Na2MoO4·2H2O | 0.01 g |
H3BO3 | 0.02Â g | H3BO3 | 0.01Â g |
NiCl2 .6H2O | 0.02 g |  |  |
Distilled water | Up to 1Â L | Distilled water | Up to 1Â L |
Adjusting the pH to 7 by NaOH (6Â M) | Adjusting the pH to 7 by KOH (2Â M) |