The DARKROOM COOKBOOK, Third Edition

Stock Solution B
Water at 125F/52C, 750.0 ml
*Sodium carbonate, anhydrous, 75.0 g
Potassium bromide, 2.0 g
Water to make 1.0 liter
* Sodium carbonate, monohydrate, 87.0 g
Formulas 225
Mix 1 part A, 1 part B, and 6 parts water. Develop fi lms approximately 1 minute in a tray or
5 minutes in a tank at 68F/20C.
Low-Temperature Developers
FORMULA #40
Kodak D-8
Water, 750.0 ml
Sodium sulfi te, 90.0 g
Hydroquinone, 45.0 g
Sodium hydroxide, 37.5 g
Potassium bromide, 30.0 g
Water to make 1.0 liter
For use, mix 2 parts of stock solution and 1 part of water.
Procedures for Processing Film in the �30F/�1C to �60F/16C Range with D-8.
1. Develop for the times given on the time-temperature development chart in Table 2.
2. Rinse in dilute acetic acid (Kodak SB-1 Nonhardening Stop Bath) about 1 minute.
3. Fix in rapid fi xer for 1½ times the time required to clear, which should be approximately
4 minutes at 60F/16C or 8 minutes at 40F/4C.
4. Wash in running water for 30 minutes or in four successive changes of water for 2 to
5 minutes each. Where water is scarce, these rinse baths may be saved, discarding the
fi rst bath each time, making the second bath the fi rst, the third bath the second, the
fourth bath the third, and employing a fresh fourth bath.
5. Air dry, or dry with heat if available. For more rapid drying, bathe in isopropyl alcohol
or a good denatured alcohol for 1 to 2 minutes. The fi lm should then be dried without
heat or opalescence will occur. Use of an 85% alcohol solution will eliminate opalescence,
but drying will be slower.
6. If the solutions are likely to be subjected to freezing temperatures during storage, 25%
of ethylene glycol should be added to the total volume of developer and the processing
times doubled. The alcohol bath is imperative when there is danger of freezing
during drying.