The method describes how to determine the iron content of water photometrically with a cuvette test.
Iron(II) ions form a rust-colored complex with 1,10-phenanthroline. Iron(III) ions are reduced to iron(II) ions.
The method describes how to determine the iron content of water using a phenanthroline solution.
Iron(II) ions react with 1,10-phenanthroline, forming a rust-colored complex; ferric iron is reduced to ferrous iron prior to complex formation by hydroxyl ammonium chloride. The color of the solution is visually compared to a color disk using a comparator.