This is the original version, I've seen other similar MQ concentrated developer formulae.


Water distilled 1000.0 cc.
Claritol 26.3 grams
Sodium sulfite anhydrous 180.0 grams
Hydroquinone 52.5 grams
Potassium bromide 8.8 grams

When the above are mixed, a thick white precipitate results. Add

Sodium hydroxide 35.1 grams

When the sodium hydroxide is dissolved, a clear solution results. Bottle and allow to stand for 24 hours, then filter through paper and store in small bottles with rubber stoppers. Keeps in perfect condition for a very long time.

Dilute with water, 1:40 for tank development of plates and films, 1:10 or 1:15 for papers.
If allowed to stand in a cold pl ace there may be a precipitation of crystals. This does no her-., and crystals may be re-dissolved by warming and shaking the bottle.

Elon or metol may be used instead of Claritol, in which case only 13.15 grams should be used.