Re: glyoxal testing anyone?

Thanks Judy, Marek, Mark, et al,
     Will add thicker gelatin, water choice, dif amounts of glyoxal, and
will put them all in Mark Nelson's bed, not closet, for him to sleep on for
a while. I figure he needs to sleep now that he has finished his book,
right Mark? hehehehe
     Kate, you're in New Zealand where you say the ozone is depleted--any
chance you could save a piece of glyoxal hardened paper for several months,
too?
Chris
----- Original Message -----
From: "Judy Seigel" <jseigel@panix.com>
To: "Alt list" <alt-photo-process-l@sask.usask.ca>
Sent: Friday, August 27, 2004 11:10 PM
Subject: Re: glyoxal testing anyone?

>
>
> On Fri, 27 Aug 2004, Christina Z. Anderson wrote:
> CUT
>
> > paper inside in dark in full air
> > paper inside in ziploc in dark
> >
> > Does this address all the possible ideas that have come up as to the
cause?
> > Light and dark, Air circulation or no air, using paper right away or
storing
> > for later. glyoxal in gelatin or not. What am I missing because I'm
sure
> > there is something (don't tell me a brain or common sense). **Special
> > requests*, or others that would like do this with me (Don)?
>
> Christina, I think of two other variables -- one I've noticed and the
> other I've wondered about: The first is thickness of the gelatin: I've
> noticed yellowing along an edge where a bead of gelatin had dripped when
> the rest of the sheet was fine. I doubt you can ring that variation on
> all your other variables (where that would end knows god !!), but it might
> be possible in one or two.
>
> The other is water... Maybe after you persuade some combo to yellow you
> could repeat with distilled?
>
> > It'll take me several months, so don't hold your breath.
>
> Well actually I am holding my breath. You are poised to contribute to
> the sum total of human knowledge (possibly !).
>
> good luck,
>
> Judy
>
>
> That is how long I
> > was gone from the paper that yellowed inside, in full air, room light, n
ot
> > washed, and not used right away, and aquarelle. If there is any
yellowing
> > then I can narrow down and do a second test thereafter.
> > Chris
> >
> >
>
Received on Fri Aug 27 22:30:32 2004