Re: paper sizing
Beakman (beakman@netcom.com)
Wed, 23 Aug 1995 05:18:20 -0700 (PDT)
> > citric acid, or Kodak's Hypo Clearing Agent.
>
> That's the first I've heard of Hypo Clearing Agent to clear pl/pd. I
> thought that was just to make hypo wash out of paper better. "Clearing"in
> pl/pd is to remove residual iron from paper, no? (Mike?) However, some
> paper-developer combinations clear quite well in the developer (eg.
> Bostick & Sullivan ammonium citrate developer on a smooth hard paper), so
> someone could be dutifully "clearing" with Hypo Clear & none-the-wiser to
> the fact that it's irrelevant. (Anyone?)
I use Kodak Hypo Clearing Agent (HCA). I am printing on Arches Platine -
2 coats which I allow to dry overnight. Needless to say, the iron has a
tenacious grip on this paper and serious clearing is required. HCA is
made up of sodium sulfite, sodium metabisulfite, sodium citrate, and
EDTA, so it is really a convenient combination of several popular
clearing agents.
David Fokos