[Alt-photo] Re: Sulfamic Acid for Paper Acidification

[Serdar Bilici]

Hi Alberto,

Unfortunately, I haven't prepared samples to compare.I started testing with
HCl then oxalic acid then briefly tested citric acid. I even tried tartaric
acid for fun (it works).
As I have mentioned in the post, the problems I had with other acids forced
me to look for an alternative in the first place.

I did not want to start a 'which acid is better' argument so I did not
include the problems I observed with the other acids in the forum post. I
still try not to mention the problems. :)
I thinks the samples and the advantages of sulfamic acid are fine enough, If
people are convinced they would give it a shot IMO.

P.S. I haven't tested vinegar/acetic acid on purpose. Vinegar has additives
different brands have different concentrations.
Concentrated acetic acid fumes is bad for lungs, considering that the
acidification procedure would take considerable time I did not want that
kind of exposure due to my asthma.

Regards
Serdar







-----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
Alberto Novo
Sent: 05 Mayıs 2013 Pazar 09:21
To: alt-photo-process-list at lists.altphotolist.org
Subject: [Alt-photo] Re: Sulfamic Acid for Paper Acidification

> I would be pleased to hear your opinions, suggestions for optimizing 
> the procedure.
> I did some test using new cyanotype, argyrotype and Loris did some 
> testing with ziatype and argyrotype.

Sedar, did you compared (by means of step tablet printing) the sulfamic acid
treatment vs other acidifying methods , e.g. HCl, citric acid, etc? 

Alberto
www.facebook.com/alberto.novo.1
www.grupponamias.com
www.alternativephotography.com/wp/photographers/rodolfo-namias-group
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