Iron Blue Toner

Formulary's Iron Blue Toner is an inexpensive and effective blue toner similar to Ansco Toner 241. It is often used on snow scenes and seascapes. Prints are toned in a single solution of ferric ammonium citrate and potassium ferricyanide until they appear green. After washing they turn a clear blue color. The tones can be softened in a borax bath.

 Tech Info