Clearing of Iron Salts in Pt/Pd paper (fwd)
Beakman (beakman@netcom.com)
Thu, 13 Nov 1997 17:29:00 -0800 (PST)
> Message text written by Beakman
> >
> EDTA is not the main constituent of Kodak Hypo Clearing Agent (HCA),
> sodium sulfite holds that honor. <
>
> I have not used the stuff for some time as it struck me that there were
> cheaper and more effective ways of achieving the effect of clearing
> platinum prints. But, then. that is not what HCA was made for.
>
> Terry King
Cheaper? Possibly. More effective? I have yet to see it. And yes, it is
true that HCA was not made for clearing platinum prints, but neither was
citric acid, sodium sulfite, hydrochloric acid or any of the other
effective tools. Unlike the others, HCA was however formulated to be a
clearing agent.
David Fokos