The DARKROOM COOKBOOK, Third Edition

Formulas 299
After treatment in the chloride bath briefl y rinse the prints and place in the gold solution.
The effect of this bath is to replace the golden tint with a reddish one. Toning may be continued
for from 2 to 16 minutes, with the color becoming more purple as the toning proceeds.
A short wash should be done before drying.
If a slight yellowish stain appears on the gold-toned print, it may be cleared with a second
treatment in any non-hardening fi xing bath. Thorough washing should follow.
The following table indicates the effect obtained by gold modifi cation after toning in the
various bleach–toner combinations.
Bleach in Tone in Tone Resulting after Gold Modifi cation
6B-1 6T-1 From purplish-brown to rich purple colors.
6B-2 6T-1 More crimson-like tone.
6B-1 *6T-3 Rich-reddish brown.
6B-3 *6T-3 Brilliant light reddish-brown, darkening as toning progresses
*When modifi ed, the 6T-3 toners produce less purple colors than the 6T-1 toners. All gold tone modifi ed prints change color somewhat
on drying and this cannot be avoided. The color descriptions given above apply to the dried prints.
Caution: Dissolve the sodium hydroxide in a small volume of water in a separate container
before adding it to the solution of the other constituents.
NEGATIVE REDUCERS
FORMULA #167
Ammonium Thiosulfate Reducer
Ammonium Thiosulfate Reducer is prepared by adding citric acid to an ammonium thiosulfate
rapid fi xing bath, such as ATF-5. This reducer can be used to remove silver stains and dichroic
fog from negatives, and for the reduction of both prints and fi ne-grain negative materials.
Normal Ammonium Thiosulfate Reducer
Dilute 1 part of rapid fi xer containing hardener with 2 parts of water. To each liter of the
diluted fi xer add 15.0 grams of citric acid, anhydrous.
This dilution is for correcting slight overexposure or overdevelopment of fi ne-grain negatives
and overall print reduction (bleaching). For print reduction follow the instructions given
under Print Reducers, Farmer’s Reducer.
Removal of Silver Stains and Dichroic Fog: Immerse the negative or print in the solution
and swab the surface with absorbent cotton to hasten the removal of surface scum.
The action is usually complete in 2 to 5 minutes. Remove the negative or print from the solution
immediately if any reduction of low-density image detail is noted.