This developer is intended for use with T-Max and Delta films, although it will produce excellent results with traditional emulsions. FX-37 is designed to produce very sharp, tonally rich negatives with an EFS speed increase. It is not a fine grain developer and is not recommended for fast traditional films.

Increase the EFS by one-half to two-thirds of a stop.

Distilled water (50ーC) ................. 750 ml
Sodium sulfite (anhy) .................. 60.0 g
Hydroquinone ........................... 5.0 g
Sodium carbonate (anhy) ................ 5.0 g
Phenidone .............................. 0.5 g
Borax .................................. 2.5 g
Potassium bromide ...................... 0.5 g
Benzotriazole, 1% ...................... 5.0 ml
Distilled water to make ................ 1.0 l

All times are for the 1+3 dilution at 20 C. For increase speed dilute 1+5.


覧覧覧覧覧覧覧 EI Min 覧覧
Fuji Neopan 400 500 6
Neopan 1600 1600 5
覧覧覧覧覧覧覧覧覧覧
Ilford Delta 100 160 8シ
Delta 400 500 7ス
Pan-F Plus 64 4
FP4 Plus 160 4ス
HP5 Plus 640 6ス
覧覧覧覧覧覧覧覧覧覧
Kodak Plux-X 200 5ス
T-Max 100 Pro 125 8
T-Max 400 Pro 500 9
T-Max 400 Pro 400 8
T-Max 3200 1600 8
Tri-X 500 6


Crawley stated that FX-37 is the closest published formula to FX-39

The benzotriazole can be eliminated if the bromide is increase to 1 g/l.

I have not tried this formula as I do not use either of the two classes of film mentioned. I include it here because some people do like these films.