Re: old vs. new cyanotype

From: Christina Z. Anderson ^lt;>
Date: 06/12/04-08:48:11 AM Z
Message-id: <008a01c4508c$b325d0e0$303ead42@oemcomputer>

Thanks, Kerik! This is good to know since I plan on doing pt/pd gumovers
this summer, too.

> Christine,
> F.A. appears to be pretty highly buffered. It takes about a 5 minute soak
> in 1% oxalic acid to make it work well for pt/pd. A simple surface coating
> of OA doesn't do it. So, if you want to make it work for Cyano, an OA soak
> may do the trick.
> Kerik
Received on Sat Jun 12 09:16:17 2004

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