prussian blue

  1. marcookie

    Iron Blue Toner

    I experimented with iron blue toner and liked some of the results. The brilliancy of the tones is unlike anything I have ever seen. It definitely has some uses. To make half liter: 300 mL warm water 4 g ferric ammounium citrate 4 g potassium ferricyanide 130 mL of 28% acetic acid (or 35 g...
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