Diafine can be easy mixed from plain chemistry. Last years I was research some 2bath formulas:
Originally Posted by pdeeh
Diafine revisited: Ascorbate version
Metol-Glycin two bath experiment
RD-201: Phenidone-Pyrogallol true two bath
RD-201 now is my default 2bath developer.
If you haven't experience with mixing devs from scratch, you can try "Lazy D-76". You need Soda (Sodium carbonate anh.). Make 2nd bath with 10-15 g/l of soda. Place film in D-76 stock for time less by 30% than recommended. After this place film in 2nd bath (with soda) for 3min. stop and fix. some samples:
Barry Thornton didn't mention which metaborate should be used.
Originally Posted by Adrian Twiss
I did my tests with 4 mol (NaBO2·2H2O)
Here are my results:
18 grams of metaborate: Ḡ=0.46
24 grams of metaborate: Ḡ=0.56
31 grams of metaborate: Ḡ=0.67
Agitation: bath A: constant first 30 seconds, then 3 times each minute; bath B: 3 times at the beginning, then once every minute.