The DARKROOM COOKBOOK, Third Edition

280 THE DARKROOM COOKBOOK
NOTE 1: This solution should be stored in the dark as ferricyanide solutions are light sensitive.
Should the solution turn blue, the bleach should be discarded.
NOTE 2: Use plastic trays, especially with the bleaching bath. Otherwise, blue spots may form
on the print.
FORMULA #143
Ansco 222
Hypo-alum toner for reddish-brown tones.
SOLUTION A
Water, 2350.0 ml
Sodium thiosulfate, 450.0 g
SOLUTION B
Water, 30.0 ml
Silver nitrate, 1.3 g
SOLUTION C
Water, 30.0 ml
Potassium iodide, 2.7 g
Add Solution B to Solution A then add Solution C. Finally add 105.0 grams of potassium alum
and heat the bath to the boiling point or until sulfurization takes place (indicated by a milky
appearance of the solution). Tone prints 20 to 60 minutes at 110F/43C to 125F/52C. Agitate
prints occasionally until toning is complete.
NOTE: Care should be taken to see that the blacks are fully converted before removing the
prints from the toning bath, otherwise double tones may result.
FORMULA #144
Formulary Thiourea Toner
(William M. Wilson)
This formula is similar to Ansco 221 Sepia Toner, without the rotten egg smell associated with
sulfi de toners.
Bleach:
Water at 125F/52C, 750.0 ml
Potassium ferricyanide, 50.0 g
Potassium bromide, 10.0 g
Sodium carbonate, monohydrate, 20.0 g
Water to make 1.0 liter