[pure-silver] Re: I say Ammonium you say Potassium
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 21 Aug 2007 19:10:56 -0700
----- Original Message -----
From: "Eric Nelson" <emanmb@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, August 21, 2007 6:19 PM
Subject: [pure-silver] Re: I say Ammonium you say Potassium
Thanks Richard!
Blumann's book here is circa 1937 and my edition of
Anchell's Cookbook is from 1994 so over a wide spread
of time nothing changed in my references...although I
wasn't around for Blumann haha!
Too bad for me no one made any published notice of the
ability to substitute Pot. for Amm. that I could
easily find.
Eric
I never even noticed this until you asked even though
I've seen both versions a great many times. Anyway, its
worth trying the toner. I suspect it will work even without
the Gold Chloride although the color will be different.
There is an older Hypo-Alum type toner with Gold
Chloride called Gold-Medal toner, which I think Blumann may
have in his book. It was included in Kodak formula books
before Nelson's (1930). Hypo-Alum is in some ways a PITA and
reportedly smells strongly of Hydrogen Sulfide. KBT is
similar Hypo-Alum in that it produces cold-brown tones in
comparison to indirect (bleach and redevelop) type toners
but I suspect Nelson's is unique.
As you are probably aware a standard Gold toner, which
produces bluish tones on untoned images, will convert a
silver sulfide image to red. Gold toner can be used with
partial toning in a sulfide toner to get bluish shadows and
reddish highlights.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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