Well, technically speaking, I should use the other forum but I think more chemistryheads are here than there... or maybe everyone reads both anyway.

I've been playing with the idea of formulating glycin print developer for vertical slot processors like Nova, in the hope of increasing processing capacity, easy replenishment system, and long tray life. Maybe AGFA 115 can be a starting point. Does anyone have experience with this or identical/similar formulae left in tray for weeks or maybe months and trying to push the limit of processing capacity?

-- Ryuji Suzuki (rsuzuki@rs.cncdsl.com), May 02, 2002

Answers

I left some used 130 in a flask on the counter for several months and was surprised at how well it kept. Eventually it left a black (silver?) deposit on the walls of the flask, that I have yet to clean off. If this had been Dektol, it would have been a black muddy mess, but the stuff stayed a medium yellow. The flask had an inch or two of air space and the cap was just a plastic Dixie cup to prevent dust entry. My only other thought is that the 130 seems very slow with developing times of 3 or more minutes. Don't know if you can speed it up. It's also warmer than other choices, and I'm more into cold prints :-)

-- Conrad Hoffman (choffman@rpa.net), May 02, 2002.

Interesting. Did your mild aged Ansco 130 still develop papers well? And does it have large enough capacity compared to Dektol?

It sounds like it is worthwhile pursuing the idea of making phenidone-glycin print developers...

-- Ryuji Suzuki (rsuzuki@rs.cncdsl.com), May 02, 2002.

It sounds like it is worthwhile pursuing the idea of making phenidone-glycin print developers..

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Well, maybe. Formulary's BW-65 is a glycin-phenidone-HQ developer, and its working solution life is abysmally short-I've used it on consecutive nights but quality is noticeably less and then it craps out real quick. Its essentially good for a few hours (with high capacity though), and thats that. I've mixed a phenidone version of Ansco 130, which produces somewhat similar results, results that I especially like on Forte PolyWarmtone+. Now is when a memory (mine) would come in real handy. I dont recall how long mine lasted, but I know it was a lot longer than BW-65. I just dont recall if it was days longer or weeks longer. the stock keeps forever, but once working solution life is another animal. If my memory comes back I'll let you know

-- Wayne (wsteffen@skypoint.com), May 02, 2002.

Well, I used the 130 a few times, a few weeks apart, and it was just as slow as the day I mixed it. Guess I'm spoiled by Dektol and developer incorporated papers :-) Glycin is supposed to protect other developers from oxidation, and I really like the tonal quality of FX- 2. It's also supposed to last longer in solution than dry. I've mixed a couple phenidone developers and didn't find any real advantages. I think Gainer did a HC-110 based paper developer that might be worth trying too.

-- Conrad Hoffman (choffman@rpa.net), May 02, 2002.