scott wrote:
>> Hmm, I wonder if there's a way of extracting some liquid nitrogen from 
>> our N2 tanks? (They're designed to feed gas, not liquid.)
> 
> You could try letting it out really fast through a small nozzle, with 
> CO2 that makes dry ice doesn't it (as opposed to letting it out slowly 
> then it's a gas).

...alternatively, it might be simpler for me to take some dry ice home 
with me. (It's not as cold is liquid nitrogen, but it's still pretty 
friggin' cold!)

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