Fotospeed Cyanotype Sensitiser 50ml

After mixing two test prints by the book, the single-solution formula processed cleaner than any two-part kit I’ve tried before. The deep Prussian blue came out perfectly even on just the third wash.

Used it straight out of the bottle as a single working solution, which saved me the hassle of mixing two parts. The prints came out a deep, even blue with no patchiness, and the liquid stayed good for a couple of weeks in a sealed container.

The solution consistently gives me rich, deep Prussian blue tones on the first try — no mixing required. I've used it with cold-pressed watercolor paper and the detail is sharp. Still on my first 50ml bottle after a dozen prints.