[alt-photo] Re: Re-acidifying papers with sparkling water?

[Ryuji Suzuki]

From: "Paul Viapiano" <viapiano at pacbell.net>
Subject: [alt-photo] Re: Re-acidifying papers with sparkling water?
Date: Fri, 23 Apr 2010 09:32:57 -0700

> Chris...
> 
> What about using an oxalic acid solution for pretreating paper
> for cyanotype, much as pt/pd printers use.
> 
> You could also try citric acid as well...all much less risky
> than using HCl acid.

Before coming up with a list of acids people can think of,
here are I think important criteria:

1. the acid must be able to neutralize all calcium carbonate
   in the paper
2. the residue does not interfere with the iron-based imaging
   system

Safety, accessibility, etc., are important factors but if
these two criteria are not met, those factors are irrelevant.

--
Ryuji Suzuki
"The purpose of art is not the momentary ejection of adrenaline,
but rather the lifelong construction of a state of wonder and serenity." (Glenn Gould)