Darkroom Chemistry Mixer
Working solutions by the batch, in process order. For tank-sized developer and development times, use the Film Development Calculator.
Mixing for
Paper base
Batch size
Units
Shelf lives are for a full, tightly capped bottle unless stated, taken from the manufacturers' datasheets; ones marked "est." are typical values the manufacturer does not state. Half-full bottles keep much less well. Always use fresh developer if in doubt.