[pure-silver] Re: Hardening fixer for film
- From: Snoopy <snoopy@xxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Mon, 16 Apr 2007 18:05:42 +0200
At 17:10 16.04.2007, you wrote:
Sistan can cause problems if too much of it is left in the
emulsion. Agfa never seemed to settle on definite instructions for its use.
Dear Richard,
OK, I did see that AGFA claims in their data sheet, that the
Institute for Image Permance say that Sistan is as effective as
Selenium Toning for image permanence.
So there seems to be no problem with that, at least for prints.
AGFA does point out in its datasheet that prints can become splotchy
when Sistan is too concentrated and you are warned to make sure to
stick to the recommended dilution, agitate evenly and ensure even
flow over the print.
Also they clearly state that you should NOT dry prints treated with
Sistan when they are on top of each other. Sistan might drip down
onto the lower print and can cause concentration differentials which
then lead to the staining (as Sistan then gets more concentrated when
it dries).
This is from the German data sheets, it might be that the English
versions were less clear nd less detailed.
Love
Snoopy
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