[pure-silver] Re: Selenium toning + Agfa Sistan

I'm sure you're toning your prints for a certain length of time. Is the
silver conversion 100% complete at that point in time? Is it at half that
time? Is it at 10% of that time?

I may not tone to completion, because I may dislike the color change. In
that case, I like the additional protection of Sistan.





Regards



Ralph W. Lambrecht




On 11/30/04 11:10 PM, "Ryuji Suzuki" <rs@xxxxxxxxxxxxxxx> wrote:

> From: DarkroomMagic <info@xxxxxxxxxxxxxxxx>
> Subject: [pure-silver] Re: Selenium toning + Agfa Sistan
> Date: Fri, 26 Nov 2004 01:11:17 +0100
> 
>> Selenium and KBT will protect the silver from this oxidation by
>> forming mor= e stable silver selenide and silver sulfide,
>> respectively. Hence, Sistan has nothing to do work on in a fully
>> toned print. However, these toner conversions are never 100%, and
>> that's why I like the Sistan treatment in addition to toning.
> 
> Huh? Toners can convert silver to silver selenide or sulfide to
> completion. Indirect toners do that, as well as polysulfide.  Where
> did you hear they cannot?

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