RE: Hardening With Glyoxal: One Shot?

[Don Bryant <dsbryant@bellsouth.net>]

Michael,

Nope! Once the gelatin cools and hardens the mix cannot be re-used. Chris
Anderson notes on page 44 of her book 'Alternative Processes Condensed',
that Kerik Kouklis adds 6 drops of formalin to 10 ml of size to cover a
14x17 area. Perhaps this would work with glyoxal also, though I'm not clear
how Kerik is able to mix the hardener uniformly in such a small volume of
gelatin.

Don Bryant


-----Original Message-----
From: Michael Koch-Schulte [mailto:mkochsch@shaw.ca] 
Sent: Monday, May 07, 2007 2:31 AM
To: alt-photo-process-l@sask.usask.ca
Subject: Hardening With Glyoxal: One Shot?

I'm mixing small batches (100 ml) of 3 per cent Knox with 2.5 mls of Glyoxal
(oh, and a splash of rye whiskey for bubbles) for sizing paper with a sponge
brush. Can I reuse this mixture by simply reheating in the microwave after
it cools and gels overnight? Is there a shelf life? Thx.

~m

RNP Arrays: An Open Source Digital Negative Project www.inkjetnegative.com