[Histonet] pouring of liquid nitrogen into a cryostat

[Emily Sours]

I would suggest dry ice (on top of something plastic on top of the metal
shelves), NOT liquid nitrogen.  Dry ice is usually cold enough to bring our
cryostat to -28 C when it won't cool down past -24 C because of frost on the
compressor.  I don't think it actually makes the cryostat colder than that.
Also, you don't really need that much, just a medium sized chunk.  Be
careful not to get your face too close to the chamber because remember, it
is evaporating carbon dioxide!!
Worse comes to worse, I guess you could use plain ice, but that would
probably melt faster than you could use it.

Emily


A great book should leave you with many experiences, and slightly exhausted.
You should live several lives while reading it.
-William Styron



On Fri, Oct 14, 2011 at 12:36 PM, Kaye Ryan <kryan <@t> nfderm.com> wrote:

> Hi Everyone,
>
> Has anyone ever heard of pouring liquid nitrogen into the chamber of a
> cryostat that has warmed up to help cool it down more quickly?  Does
> this do harm to the chamber or mechanisms of the cryostat?  Any
> information would be appreciated.
>
>
>
> Thanks
>
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