[pure-silver] Re: RC paper and fixer questions. Also a sink update
- From: "Jean-David Beyer" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "jeandavid8" for DMARC)
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sun, 8 Aug 2021 22:34:36 -0400
On 8/8/21 6:26 PM, `Richard Knoppow wrote:
Sistan is apparently a mixture of thiocyanate and a wetting agent. So,
its used in place of a wetting agent as the last step where it will not
be rinsed out by a subsequent bath. One complaint about it had to do
with establishing the concentration of the chemical remaining in the
emulsion. If the stuff works it has some advantages over toning.
As I recall, thyocyanate is a fixing agent. So there must be more in
Sistan that that and a wetting agent if it is meant to protect prints
better than washing in water.
--
.~. Jean-David Beyer
/V\ Shrewsbury, New Jersey
/( )\ Red Hat Enterprise Linux
^^-^^ up 8 hours, 49 minutes
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