[pure-silver] Re: Selenium toning question, was stopbath kills fixer
- From: anclancy@xxxxxxxxxxx
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 27 Jan 2005 04:39:44 +0000
there is no need to just tone 4 11x14 and toss. it is not good for the
environment, and the selenium is still good.
as it begins to slow down, just add some selenium to the mixture and continue
to use.
I haven't read the directions in a long time, so i can't comment of the number
of prints per ounce, but as many others, i continue to use the toner, adding as
needed. The last time i topped off a 1:10 ratio was last year some time, and i
tone frequently. Don't remember the last time the other ratios have had to had
additional selenium added.
The directions also, indicate that one can mix the selenium with HCA, which is
no longer considered a wise and necessary directions.
regards,
ann
-------------- Original message --------------
> Lloyd Erlick wrote:
>
> > jan2505 from Lloyd Erlick,
> (snipped)
> >
> > Another reason I suspended use of acid in my darkroom is that I have
> > noticed my selenium toner behaves much, much better this way. Formerly,
> > after a few uses, my toner began to produce a very dark precipitate that
> > eventually made the solution so murky and unpleasant looking that I could
> > no longer bear to use it. The stuff is expensive, and I use it at quite a
> > high concentration, so it is expensive. With no acid present, I noticed the
> > murkiness was vastly reduced. After two years of use, my selenium toner
> > working solution is still close to water-clear. (I also filter it through
> > coffee filters; doing this before I deleted acid never quite cleared it.) I
> > never throw away my toner now, I just keep topping it up. The only loss of
> > toner I have now is from carry-out on the sheets.
> > ...
>
>
> I understood the information on the bottle to say
> something about so many 8x10's per ounce of product, or
> some such limitation. (Sorry, I'm a long way from the
> darkroom and the bottle). I thought the selenium was
> consumed out of the solution in some kind of chemical
> reaction. I get four 11x14's from a tray of working
> solution, and I toss it. Yes, it's very expensive. Am
> I missing something? Is this just Kodak's way to sell
> more product? Is it okay to just run prints through
> this same wet bath forever, as long as it was initially
> mixed at the recommended archival dilution?
>
> regards... Dick Gifford
>
>
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