POP gold toning was Re: To: alt-photo-process-l@sask.usask.ca

[epona <acolyta@napc.com>]

Also, tinformation I received from Chicago Albumen Works states that you can
use old ammonium thiocyanate/gold toner to make a fresh batch the next time you
tone.  You substitute 450 ml in place of water.  They also state to *not*
follow this practice for alkaline (borax) gold toners.  There is a description
of this in more detail on their web site, http://www.albumenworks.com.

Cheers,
Christine

Shannon Stoney wrote:

> > I've just started processing POP as a way of getting into alternative
> > processing, the eventual goal is to be able to make daguerreotypes; my
> > question- how long does the gold chloride/ammonium thiocyanate combo last
> > once mixed? I see that the two individually last at least as long as the
> > toner, but does the mixture decompose?
>
> My experience is that it doesn't last.  You make up enough for that printing
> session and then throw it away.  Also, you have to renew it by adding a
> little more gold and ammonium thiocyanate after a few prints.  The paper I
> got had directions for how to do this.
>
> This is a problem for POP prints I think, as the gold toner is rather
> expensive.
>
> --shannon

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