Sphagnum extract is prepared by autoclaving for 20 min, 25 g of finely ground Sphagnum peat and 0.5 g of Ammonium Ferric Citrate in 1 L distilled water. Allow to cool and settle, using the supernatant only.
||Stock Solution Concentration
||Ferric Ammonium Citrate
Note: Final concentration listed is for the stock solution.