Orders placed after 4PM on weekdays will not ship until the next business day. Orders placed after 11AM Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enter new zip code to refresh estimated delivery time.
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.