[pure-silver] Re: I say Ammonium you say Potassium
- From: Richard Knoppow <dickburk@xxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 21 Aug 2007 04:46:33 -0700 (GMT-07:00)
-----Original Message-----
>From: Eric Nelson <emanmb@xxxxxxxxx>
>Sent: Aug 20, 2007 11:11 PM
>To: pure-silver@xxxxxxxxxxxxx
>Subject: [pure-silver] I say Ammonium you say Potassium
>
>In my Darkroom Cookbook as well as Blumann's book,
>ammonium persulfate is called for for Nelson Gold
>toner.
>Is potassium interchangeable here? I found it listed
>here. http://www.jackspcs.com/t21.htm
>
>Eric
>
The patent, USP 1849245, lists Ammonium Persulfate. I will check at home
if the Kodak and Agfa versions use the Potassium salt.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
Los Angeles, CA, USA
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