[pure-silver] Re: stopbath kills fixer - FAQs??
- From: titrisol <titrisol@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 25 Jan 2005 07:09:28 -0800 (PST)
Some QA here should be in the FAQ:
- What is HYPO
- Plain hyp fixers - Rapid fixers
- How to dissolve hypo
- pH of solutions
- Life of selenium toner
I use a mild stop bath made of acetic acid to neutralize the
alkaline developer, and use rapid fixer afterwards.
Used plain hypo fixers long time ago, but prefer the rapid
fixers now (they come in liquid concentrates)
--- Lloyd Erlick <lloyd@xxxxxxxxxxxx> wrote:
> jan2505 from Lloyd Erlick,
>
>
>
> At 05:34 PM 1/24/2005 , you wrote:
>
> ... The only reason to use an
> >alkaline fixer is to lessen the pH extremes that the emulsion
> is exposed to.
> ...
>
>
> I use it for a completely different reason (several,
> actually), so it
> appears the above cannot be 'the only reason'. (Not to split
> hairs, but I
> don't really think of my fixer as powerfully alkaline; it is
> probably more
> like neutral to mildly alkaline. I use the formula called
> 'Plain Fixer'
> Ansel Adams published in the Appendix to "The Print".)
>
>
> >
> >I have no experience with sodium thiosulfate (old time hypo)
> fixers at a
> >neutral pH but I doubt they would work well.
> ...
>
> Well, I've used a good ol' time hypo pretty much neutral or
> maybe a tad
> alkaline fixer for years, as outlined above. I'd like to see
> some evidence
> to back up the statement of doubt regarding their performance.
> I have the
> evidence of my own experience to convince me that such a fixer
> performs
> just fine, and in fact suits my working needs and style much
> better than a
> commercial fixer based on ammonium thiosulfate. It's also very
> cheap and a
> snap to prepare, plus if any cleanup is necessary it's easy.
>
> (I think in reality the old time hypo was sodium thiosulfate
> pentahydrate.
> These days the anhydrous form is readily available, and is
> very easy to
> work with.)
>
> Regards,
> --le
> ________________________________
> Lloyd Erlick Portraits, Toronto.
> voice: 416-686-0326
> email: portrait@xxxxxxxxxxxx
> net: www.heylloyd.com
> ________________________________
> --
>
>
>
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