Re: Glyoxal?

Thanks Christina,

are there other ways (other stuff) to harden the gelatine without causing a
change in color and I assume doing all of this we must keep a neutral ph or
whatever is best for archival.

Regards
Yves

----- Original Message -----
From: "Christina Z. Anderson" <zphoto@montana.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Thursday, January 12, 2006 4:11 PM
Subject: Re: Glyoxal?

> but I don't bother to rinse
> > as a step in the sizing process because the development bath in the gum
> > process restores the paper to the original pristine white. So I don't
see
> > any necessity for a separate rinse. But you'll need to see if that
works
> > with your paper, or not.
> > Katharine
>
> Yves,
> Sorry to disagree here but there are a number of us on the list that
cannot
> get that stain out no matter how much we soak it, breathe on it, sit on
it,
> look at it. You can do what you want, but don't say we didn't warn you :)
> If I wanted a dull ivory paper to print on, I would have bought it that
way
> to begin with. It is unacceptable to me, but you may be one of the
blessed
> ones that don't get glyoxal yellowing. Pretty soon on my website I will
> have an image of glyoxal yellowing to show you what I mean. However, my
> guess is it is paper dependent, and perhaps related to my paper choice
> coupled with my water supply. The point being, for some of us the yellow
> does not disappear once it is there.
> Chris
>
Received on Thu Jan 12 19:44:30 2006