[pure-silver] Re: R: Re: question about blue toners
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 11 Nov 2009 15:07:10 -0800
----- Original Message -----
From: "Antonio Banfi"
<antoniomarioenrico.banfi@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Wednesday, November 11, 2009 2:49 AM
Subject: [pure-silver] R: Re: question about blue toners
Thank you Richard!
A.
You are welcome:-)
I've seen some discussion about the form of ferric
ammonium citrate to use, I think in the alternative
processes mailing list. The formulas that specify it by type
seem to require green scales. It is also available as brown
scales. I don't know the chemical difference but the green
scales are supposed to be more active and is the kind
usually specified for cyanotype printing.
Ferric ammonium citrate has all sorts of industrial uses and
is also used in medicine, it does not appear to be
particularly difficult to obtain or particularly expensive.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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