Re: Dark reaction in dichromated colloids

Ender100@aol.com wrote:
>
> What happens if you freeze it?
>

According to Kosar, the Lithographic Technical Foundation "reported that
the thermal reaction on dichromated-albumin and dichromated-gum arabic
deep-etch plates can almost be stopped when the plates are stored at 38
degrees F (3.3 degrees C) and 72% relative humidity. However, a small
drop in gamma can be expected after sensitized materials have been
stored at low temperature for a prolonged period." This isn't freezing,
but it's close. I have a feeling freezing wouldn't work for most
colloids; I'm thinking from my experience freezing jello by mistake
once (I was trying to chill it in a hurry and left it too long).
kt
Received on Sat Jun 12 12:28:21 2004