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Ansco 42 M-H Film Developer

FormulasThis is a soft-working tank formula recommended for pack, roll and portrait films.


Hot Water (125F or 52C) 750 ml
Metol 0.8 g
Sodium Sulfite, anhydrous 45 g
Hydroquinone 1.2 g
Sodium Carbonate, monohydrated 8 g
Potassium Bromide 1.5 g
Water to make 1 L


Do not dilute for use.

Develop 15 to 20 minutes at 68F (20C).


From Ansco Formulas for Black and White Film by GAF, 1948 – Formulas are provided for historical reference. They may not work well with modern films and papers. Some of the chemicals can be dangerous. As with all photographic processes, be careful.