[alt-photo] Re: Question for Platinum/Palladium printers

[Loris Medici]

Bob I don't know about the image, but I'm sure that HCl is a little
bir too harsh to the paper (in the long term), and should be used as a
last resort - if everthing else fails or is (somehow) impractical...
BTW, I agree with the fact HCl is the most practical clearing agent.

I wish you all a happy new year!

Regards,
Loris.


On 31 Ara 2011, at 16:50, BOB KISS <bobkiss at caribsurf.com> wrote:

>
>    Though I am not qualified to determine the verity of the following
> statement, many books and other sources on pt/pd printing allege that using
> an HCL first clearing bath can bleach some of the subtle highlights in
> (mostly or pure) palladium prints.
> *****Is there someone on this list sufficiently versed in chemistry and
> experienced in pt/pd printing to either confirm or deny this allegation once
> and for all?
>    It has been around for a long time and should either be confirmed or
> buried.
>        CHEERS!
>            BOB
>
>
> -----Original Message-----
> From: alt-photo-process-list-bounces at lists.altphotolist.org
> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
> etienne garbaux
> Sent: Saturday, December 31, 2011 10:05 AM
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] Re: Question for Platinum/Palladium printers
>
> Denny wrote:
>
>> Thanks very much for that insight, the analogy is perfect.
>
> I cannot for the life of me understand why people insist on trying to
> clear Pt/Pd prints in oxalic acid, citric acid, chelants, silver
> gelatin chemistry, Mountain Dew, hopes and prayers, or any other damn
> fool thing they think of, particularly when hydrochloric acid is
> readily available in most any hardware store worldwide (as muriatic
> acid).  I've had a few people say they think it's dangerous (most of
> whom sensitize with dichromates, make their own ferric oxalate,
> and/or fume dag plates with mercury).  Heck, oxalic acid is quite
> toxic and readily absorbed through the skin.  I say, use the right
> chemicals for the process and take appropriate precautions, or stick
> to processes that don't expose one to hazardous chemicals -- like
> inkjet prints.  (If you call them "giclee," you can even pretend they're
> alt!)
>
> Best regards,
>
> etienne
>
>
>
>
>
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