Scott Loveless wrote: > Toralf Lund wrote: > >> Hello, everybody... [ ... ] >> >> >> Anyhow, based on this I can safely say that Agefix can keep for at least >> 10 years, don't you think? >> >> > > Yes. > Good ;-) > >> Or is there *some* way the fixer can change so that it doesn't fix the >> film properly even though it seems to clear all right? (This is >> something I also meant to ask about last time.) >> >> > > I would think so. Pardon my terminology here. As the fixer is > depleted, for a given volume of working solution you have less and less > active fixer. You will eventually get to the point that there is not > enough fixer left in your working solution to adequately cover the film, > even with agitation. You should replace the fixer before it gets to > this point. Yes, that makes sense. I was, however, thinking more about a case where the clearing time does not increase, yet fixing process doesn't work the way it should, so the negative will fade faster than they ought to, or whatever. If you know what I mean...
> With the 4 minute clearing time you should have about an 8 > minute fix time in the tank. I would think that your fixer would be > good enough up to about a 6 or 8 minute clearing time. My patience > would be wearing thin at this point, as a 12 to 16 minute fix time is > too damn long to stand there staring at timer while turning the tank > over every so often. Yes. I quite agree... How often do you test your fixer, by the way? I haven't really done it in the past myself, although I've tried watching film clear a couple of times just to learn the mechanics of it. I mean, I've just increased the times a bit every time I've reused the solution, an thrown it away when it started to look gooey. > I use a rapid fixer that takes about 5 minutes to > fix Tri-X. When it starts to take more than about 8 or 9 minutes I dump > it and mix up some more. > OK. The Agefix may of course also be mixed up as a rapid fixer, but I've never tried that. >> I think perhaps I have also verified the claim that T-MAX eats fixer, >> although that was not something I set out to prove... >> >> > > Yes it does. This is one of the several reasons I have for not using > T-MAX. In the few cases that I've had to use T-MAX the fixer is dumped > after one use. > You know, I nearly poured the one I used yesterday into the sink (but don't tell anyone ;-)) just based on the way it looked, but after I did the test I'm thinking I might still use it for another couple of films. It was quite interesting to watch the behaviour in the T-MAX in the fixer, by the way. For the most of the 4 minutes I mentioned, it was fully opaque and evenly coloured (even though I'd dipped parts of it into the fixer before.) Then it became fully clear in just a few seconds. I don't really use T-MAX myself, but I do shoot a bit of Delta 100 and 400, as that's what I usually get at the local shop. Not sure if it behaves the same way. - Toralf -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
