Photographers' Formulary Toner for Black & White Prints - Sepia Sulfide 221/ Makes 1 Liter
Toner for Black & White Prints - Sepia Sulfide 221/ Makes 1 Liter
B&H # PHTSL
MFR # 06-0035
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Photograpers Formulary Sepia Sulfide 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.