[Alt-photo] PAPER QUESTION FOR TWO PROCESSES

Denny dspector at charter.net
Sat Sep 2 23:03:11 UTC 2017


Bob, it's been my experience that none of those papers require any acidification for Pt/Pd, though I haven't used recent batches of Cranes Cover or Revere.  Of all of those, my preferred paper is HPR (though I find it behaves better with some Tween).

-----Original Message-----
From: Alt-photo-process-list [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of bobkiss caribsurf.com via Alt-photo-process-list
Sent: Saturday, September 02, 2017 3:14 PM
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] PAPER QUESTION FOR TWO PROCESSES

DEAR LIST, 

I am about to do some extensive testing of some papers. My question is regarding two different processes; Cyanotype and Pt/Pd printing: with which, if any of the following papers have you found it necessary to treat them in acid to remove buffers before use in these two processes? I believe each of the manufacturers say that their papers are not buffered but "One never know, do one?" I am most concerned about the results with Cyanotype. 

Hahnem hle platinum rag 

Arches Platine (either weight) 

Revere Platinum 

Cranes Cover 90 lb wove 

Thanks in advance... 

CHEERS! 
BOB 


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