Re:HCA

Paul Simon (70760.1511@compuserve.com)
24 Aug 95 00:35:41 EDT

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.

Paul Simon