I'm the inventor of Mocon. I've been busy with other things, so I haven't been monitoring Photrio, but I ran across this thread, which brings back good memories.
My bottle of Mocon has lasted over 5 years kept frozen, and still shows no sign of deterioration. By now the bottle is nearly empty, so I'll need to make more.
Anyway, the "4 mol" in my formula should be "8 mol", and it's the sodium metaborate that Photographer's Formulary sells.
I never thought of adapting this film developer to make it a print developer. That's an interesting idea. My only warning is that the formula has no protection against the Fenton reaction, so if your water or chemicals contain substantial iron-impurities, the tray might not last a session of two or three hours. For film, the solution needed to last only 15-20 minutes, eliminating grief from Mr. Fenton. Due to that concern, I suggest investigating using hydroquinone instead of ascorbic acid.
- Mark Overton
My bottle of Mocon has lasted over 5 years kept frozen, and still shows no sign of deterioration. By now the bottle is nearly empty, so I'll need to make more.
Anyway, the "4 mol" in my formula should be "8 mol", and it's the sodium metaborate that Photographer's Formulary sells.
I never thought of adapting this film developer to make it a print developer. That's an interesting idea. My only warning is that the formula has no protection against the Fenton reaction, so if your water or chemicals contain substantial iron-impurities, the tray might not last a session of two or three hours. For film, the solution needed to last only 15-20 minutes, eliminating grief from Mr. Fenton. Due to that concern, I suggest investigating using hydroquinone instead of ascorbic acid.
- Mark Overton