The DARKROOM COOKBOOK, Third Edition

290 THE DARKROOM COOKBOOK
The dye can be cleared from the highlights by submerging in a clearing bath made of
60.0 ml of glacial acetic acid in 1.0 liter of water. An alternate method is to use 10.0 ml of
household bleach to 1.0 liter of water.
Green Toners
FORMULA #155
Ansco 251
Green Toner
This formula produces rich green tones by combining the effects of iron blue toning and sulfi de
sepia toning. It must be carefully used with attention both to the directions and to cleanliness in
handling prints throughout the process. The formula is not adaptable to all types of papers and
surfaces, and it is suggested that tests be run before committing important prints.
SOLUTION A
Potassium ferricyanide, 40.0 g
Water, 1.0 liter
Ammonia (25% to 29% solution), 15.0 ml
SOLUTION B
Ferric ammonium citrate, 17.0 g
Water, 1.0 liter
Hydrochloric acid, concentrate, 40.0 ml
SOLUTION C
Sodium sulfi de, 2.0 g
Water, 1.0 liter
*Hydrochloric acid, concentrate, 10.0 ml
* Do not add the hydrochloric acid to Solution C until immediately before use.
Prints to be toned should be darker and softer than normal prints. Use approximately 25%
overexposure on the next softer grade of paper. Development of the print should be carried
out in a standard developer, such as Kodak D-72, with particular attention given to avoid
underdevelopment or forcing the print with overdevelopment. Prints should be fi xed as usual,
thoroughly washed, and completely dried before toning.
Prints to be toned should be fi rst soaked in cold water until limp, and then placed in
Solution A until bleached. This should take about 60 seconds or less. The bleached prints
should be immediately transferred to running water for at least 30 minutes.
Bleached prints are placed in Solution B for 45 seconds to 1 minute until the deepest
shadows are toned. Wash for 4 to 6 minutes excessive washing being undesirable because of