An inexpensive fine-grain developer as published in “British Journal Photographic Almanac 1941”.

The following is an inexpensive fine-grain developer which is stated never the-less to give very excellent results.

Stock solution
Mix chemicals in order.
Sodium sulphite anhydrous136grams
Kodalk or Sodium metaborate57grams
Potassium bromide12.5grams
Water to make1liter

For use, this stock solution should be diluted with eight volumes of water. Development times for super speed pan- chromatic material are of the order of 30 min. at 18.5 °C, or 22 min. and 18 min., respectively, for fast and for extra fine grain material.

The developer may be thrown away after use, but the stock solution will keep well if properly stoppered.

↬ “The Camera,” Lucerne, May, 1940, p. 327. B. J ., 1940, Sept. 13, p. 451 ᔥ Ian Grant