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

[BOB KISS]

	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





_______________________________________________
Alt-photo-process-list | http://altphotolist.org/listinfo

__________ Information from ESET NOD32 Antivirus, version of virus signature
database 6756 (20111230) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com