I have not had glut go bad except one time I
wondered if that was the case with a bottle of Maxicide that I bought from a
medical supply house--it is already at the 2.5% dilution, and I did not mix the
additive into it that comes with the bottle, so maybe that was the case.
But I buy mine from Photo Formulary in the 25% solution in a little bottle (you
can ask them for as little as 10ml at a time, btw, which will last through 10
liters of size!) and so far that has not gone bad from year to
If it did go bad you would experience a slimy
surface of gelatin that does not feel hard. It is very apparent. If it is
working, the surface always feels smooth.
I have a few sheets here that were sized by
students in a workshop that I decided not to waste, and I also notice that they
weren't using the sizing liberally enough when they coated. The paper
feels what I call "catchy", not smooth. And in use, it stained.
----- Original Message -----
Sent: Friday, October 09, 2009 12:19
Subject: glutaraldehyde shelf life
Anybody know how long this stuff lasts? Just the mere act
of reading Phritz's woes have caused my prints to stain horribly. No
problems at all 2 weeks ago, so I doubt if it "turned", but my glut was
purchased back when Chris started to preach of it's qualities. (thanks
and I've only used a smidgeon of