Re: dichromated colloids

From: MARTINM <martinm@SoftHome.net>
Subject: Re: dichromated colloids
Date: Fri, 21 May 2004 05:34:22 +0200

> I see. I guess purity may always be an issue - even more so where gelatin
> and gum are involved...

I forgot to say one more thing. I think with very pure PVA (not
necessarily so with other colloids, or I might even say less likely,
or even say to a lesser extent), visible light component of the light
used in imagewise exposure can also change the chemical process,
potentially affecting some sensitometric characteristics.

--
Ryuji Suzuki
"You have to realize that junk is not the problem in and of itself.
Junk is the symptom, not the problem."
(Bob Dylan 1971; source: No Direction Home by Robert Shelton)