Tanning developer for color separation positives (dye-tone process).
Ingredient | Quantity | |
---|---|---|
Sodium sulphite anhydrous | 50 | grams |
Pyrocatechin | 20 | grams |
Sodium carbonate anhydrous | 100 | grams |
Potassium bromide | 4 | grams |
Water to make | 1 | liter |
Mix chemicals in order. |
Dilute 1:5 and develop about 8 minutes at 18.5°C. This formula also may be used at a dilution of 1:8 and development carried on for 15 minutes.