[Alt-photo] Re: choice of paper for Pt and gum over Pt prints - was Re: Re: Replacement paper for Arches Aquarelle

[Denny]

Pretreating with oxalic acid should be trouble-free, just soak the sheets in
a tray of oxalic acid (I usually use 3%) for about 5 minutes (or until the
bubbling stops if there's a lot of buffer in the paper) and then just hang
the sheets to dry.  This works for me with many papers including the 250 gsm
BFK Rives.  

-----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
Diana Bloomfield
Sent: Friday, February 28, 2014 7:53 AM
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] Re: choice of paper for Pt and gum over Pt prints - was
Re: Re: Replacement paper for Arches Aquarelle

Oh, thanks, Denny.  I was hoping against hope that there was no
pre-treatment.  I always seem to have trouble with that (even distribution),
but I do like the Rives papers.  I'll take a look at the discussion.  Thanks
for sending this along.

Diana

On Feb 28, 2014, at 10:49 AM, Denny wrote:

> Diana, there's a detailed (and somewhat long discussion) that includes 
> comments throughout from Stan Klimek about which BFK Rives papers he's 
> using and how he is handling them in this thread on APUG:
> http://www.apug.org/forums/forum42/118153-sulfamic-acid-paper-acidific
> ation-
> 4.html
> The paper is pre-acidified.  FYI, I've done some testing with the 
> sulfamic acid pretreatment and haven't seen any real improvement over 
> oxalic acid acidification but some people seem to like it.
> 
> Denny
> 
> 

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