[pure-silver] Re: Chemical Fogging in Reversal Processing
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 15 Aug 2006 09:53:12 -0400
The nice thing about using a fogging bath is that you can use something
like Dektol as the second developer. Thus you can get a black image
rather than a sepia one. Of course you may want a brown image for
certain purposes.
Jerry
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of John Banister
Sent: Tuesday, August 15, 2006 1:46 AM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Chemical Fogging in Reversal Processing
Thanks for that information and for pointing out that thread.
A fellow had recommended anhydrous stannous chloride to me
in the past but also gave me the impression I'd have to source it from
shops that electroplate tin. It's good to know that I can simply
purchase a Kodak product instead. I should check at APUG more often,
but my memories of having done so are always associated with a feeling
of information overload that makes me tend to postpone my visits there
until I have a big chunk of time available. The big chunks have been
scarce recently.
John
> Funny you should ask now. There has been a rather lengthy thread on
> APUG on chemical fogging for reversal. The only important points are
> these. Kodak now uses a separate bath for this purpose for E-6 rather
> than doing it during the second development as they did for the E-4 >
process. This bath consists of stannous chloride in a buffered acidic
> solution of propionic acid. This bath is used before the second >
developer after a wash to remove any remaining tin salt. There is no >
reason why this bath cannot be used for B&W reversal. I would be >
tempted to just buy this product as it is ~ $13 for enough concentrate
> to make 5 gal of bath. > > Jerry
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