The DARKROOM COOKBOOK, Third Edition

Formulas 281
This solution should be stored in the dark as ferricyanide solutions are light sensitive. Should
the solution turn blue the bleach should be discarded.
Redeveloper:
SOLUTION A
Sodium hydroxide, 10.0 g
Cold water to make 100.0 ml
SOLUTION B
Thiourea, 5.0 g
Water, 100.0 ml
Add the thiourea to the water and stir until the entire solid goes into solution. Pour into a
container for storage.
To use the redeveloper, mix 1 part A and 1 part B with 16 parts water.
To make: 250.0 ml 500.0 ml 1000.0 ml
Solution A 14.0 ml 28.0 ml 56.0 ml
Solution B 14.0 ml 28.0 ml 56.0 ml
Water to make 250.0 ml 500.0 ml 1.0 liter
Once mixed, the redeveloper is good for a working session but cannot be saved. Dispose of
the spent solution down the drain using excess amounts of water.
Using the Toner: Use plastic trays, especially with the bleaching bath. Otherwise, blue spots
may form on the print.
Prints should be washed thoroughly and then bleached while wet (if they have previously
been dried, rewet before bleaching). Bleach until the black image is converted to a very
light brown color, about 1 minute. Wash the bleached prints for 10 to 15 minutes in running
water. The bleach can be reused.
Immerse the well-washed, bleached prints in the redeveloper. Redevelopment should be
complete in about 1 minute, with constant agitation. After redevelopment the prints should
be washed for about 30 minutes and then dried. If the toner leaves sediment immerse the
print for a few seconds in a 3% solution of acetic acid, after which a 10-minute washing is
necessary.
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.
FORMULA #145
Ilford IT-2
Hypo-Alum Sepia Toner
This is a versatile toner that generally produces purplish-sepia tones. Adding a solution of
potassium iodide can cause it to yield warmer tones.