Sunday, July 01, 2007 8:12:33 PM
I remember using it to quick-freeze rat hearts when doing medical research. Placed between two blocks of dry ice, they made a squeeking noise as a little CO2 evaporated and in about 5 seconds, or so, they were frozen solid. I used over an inch of insulation picking up the top block and warmed my fingers for a minute or two while I weighed and filed each one.
Dino
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