The DARKROOM COOKBOOK, Third Edition

266 THE DARKROOM COOKBOOK
FORMULA #116
Kodak DK-93
This formula can be used to develop fi lm and paper. The use of this developer is especially
recommended for people subject to skin irritation.
Water at 125F/52C, 500.0 ml
p-Aminophenol hydrochloride, 5.0 g
Sodium sulfi te, 30.0 g
Hydroquinone, 2.5 g
Sodium metaborate, 20.0 g
Potassium bromide, 0.5 g
Water to make 1.0 liter
FILM: Use without dilution. Develop roll fi lm about 9 minutes in a tank of fresh developer at
68F/20C. Develop sheet fi lm for about 6 minutes at 68F/20C. More or less contrast may be
obtained by developing longer or shorter than specifi ed.
PAPER: For warm tones on papers, use without dilution and develop for about 2 minutes at
68F/20C. For colder tones, double the quantity of balanced alkali; use without dilution and
develop 1 to 2 minutes.
In either case, the tones produced by this developer are slightly warmer than the tones
given produced by Kodak D-52 and Kodak D-72.
STOP AND HARDENING BATHS
FORMULA #117
Bisulfi te Stop Bath
This stop bath is inexpensive and very gentle acting. It may be used in place of an acetic acid
stop bath.
Water, 750.0 ml
Sodium bisulfi te, 10.0 g
Water to make 1.0 liter
Use undiluted.
FORMULA #118
Indicator for Stop Baths
Bromcresol purple, 10% solution, 9.25 g
Sodium hydroxide, 1.0 g
Distilled water to make 250.0 ml