Photographers’ Formulary 06-0035 Sulfide Toner 1-liter

Photographers' Formulary Sepia Sulfide Toner 221 is a classic bleach and redevelopment toner that produces rich permanent sepia-brown tones. Most types of paper tone well with this process, including resin coated paper. The bleach contains potassium ferricyanide that changes the metallic silver to a silver salt. After bleaching, the print is then redeveloped in sodium sulfide. The end result can give the impression of a print made in the late 1800's·