From: Carl Weese (cweese@earthlink.net)
Date: 01/04/01-07:02:05 AM Z
Istvan,
Why are you using sodium acetate--or any other developer--with zia?
AFO/LiPd prints print out fully during exposure and need only a plain
water rinse followed by clearing. No chemical development is needed, and
it may be the cause of your problem, though I don't know the chemical
reactions involved.---Carl
Istvan Bibo wrote:
> Hi, List Members
>
> I have a seemingly unremovable yellow stain in my recent zia prints. The
> EDTA+ sodium sulfite clearing bath used to work perfectly so far. In
> this case I tried quite strong HCl solution (around 5%)which removed the
> overall yellow stain but the stronger yellow spots became even appearent
> (brownish). Can it be iron hydroxide which is, according to Mike Ware,
> unremovable?
>
> Some parameters: Standard LiPd sulution (freshly mixed)+Ammonium Ferric
> Oxalate
> Humidity:50-65% range
> developer: Sodium acetate
>
> Any ideas on the causes and remedies are welcome.
>
> The best to everyone
>
> Istvan
>
>
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