3 Ways to Remove an Iodine Stain wikiHow
Mar 29, 2019· If the iodine stain is especially old or saturated, the ammonia and dishwashing solution may not have been strong enough to remove the stain. To create a stronger solution, combine one cup (240 ml) of cool water with 1 teaspoon ( ml) of sodium thiosulfate in a small bowl. [5]