The DARKROOM COOKBOOK, Third Edition

276 THE DARKROOM COOKBOOK
Wash water should be acidifi ed slightly with acetic acid, since the blue tone is quite
soluble in alkaline solutions and is considerably weakened when the wash water is alkaline.
Pleasing variations in the tone can be obtained by bathing the washed prints in a 0.5% solution
(5 g/L) of borax, which produces softer, blue-gray tones, the extent of which depends on
the length of treatment.
NOTE: The solution should be prepared with distilled water. If enameled iron trays are used,
no chips or cracks should be present, or spots and streaks may appear in the print.
FORMULA #137
Blue Gold Toner
This formula is one of the fastest and easiest to use. It is capable of creating a deep blue color
on warm-tone chlorobromide papers.
Distilled water at 125F/52C, 750.0 ml
*Ammonium thiocyanate, 105.0 g
Gold chloride, 1% solution, 60.0 ml
Water to make 1.0 liter
* 110.0 grams of sodium thiocyanate or 135.0 grams of potassium thiocyanate may be substituted.
After fi xing and thorough washing tone the prints for 10 to 20 minutes with occasional agitation.
The prints should then be washed and dried.
FORMULA #138
Dassonville T-6
Gold Chloride
For gray-blue tones.
SOLUTION A
Thiocarbamide, 16.0 g
Water to make 1.0 liter
SOLUTION B
Gold chloride, 4.0 g
Distilled water, 1.0 liter
For use, take:
Water, 360.0 ml
Solution A: 90.0 ml
Solution B: 90.0 ml