[pure-silver] Re: AgfaPhoto Insolvency
- From: Ryuji Suzuki <rs@xxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 28 May 2005 02:21:11 -0400 (EDT)
From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
Subject: [pure-silver] Re: AgfaPhoto Insolvency
Date: Fri, 27 May 2005 14:50:49 -0700
> I know whats in Sistan but not its actual formula. Fuji
> makes a stabilizer called Ag Guard. Its evidently not the
> same substance as Sistan but serves the same purpose. Both
> are stabilizers for the image silver where toning is not
> desirable. Fuji did publish some limited research on
> Ag-Guard. It shows that its effective in preventing
> oxidation and sulfiding of the image but is not as effective
> as toning.
Fuji's data indicate that Ag Guard is as effective as gold toning in
the condition they used. Fuji has sufficiently disclosed what kind of
compounds can be used and how it is supposed to work.
--
Ryuji Suzuki
"Keep a good head and always carry a light camera."
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