Re: HCA
Beakman (beakman@netcom.com)
Thu, 24 Aug 1995 04:50:21 -0700 (PDT)
>
> On Wed, 23 Aug 1995, Beakman wrote:
> > 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.
>
> I have never read that HCA contained anything other than sodium sulfite and I
> thought, sodium sulfate(?). Where is the source of the info that HCA also
> contains citrate and EDTA? It sounds like the panacea of clearing agents.
It's written right on the packet. :)
dave