[rescue] Oh my gosh, an on-topic question! ;^)

[vance at neurotica.com]

On Thu, 20 Feb 2003, James Lockwood wrote:

> > Be careful about accumulation of condensate.
>
> Nitrogen or argon blanket in a glovebox, I expect.  Toss in a bunch of
> Drie-Rite.  Dunk in acetone to pull surface water out, any water or ice
> left will evaporate much more rapidly than straight H2O due to
> azeotrope-type behaviour at relatively low vapor pressure.  Come to
> think of it, as long as you're maintaining positive pressure with
> relatively heavy CO2, moisture may not be much of a problem.

Also you have to make sure that whatever your're blowing the CO2 across
warms back up above dewpoint before you allow it to sit in room-humid air.

> A big glovebox is trivial to build compared with large precision optics.

I tend to pack bagged Na2SO4.

Peace...  Sridhar