- #1
airwalkery2k
- 1
- 0
Hi,
I am doing some undergraduate work in Sweden, and for one of my tests, I need to place a material at -40 to about -50 degrees Celsius for a short period of time for thermal cycling. Unfortunately, my access to equipment is rather limited here
The current method we're using is just wrapping it in a cloth and dripping liquid nitrogen onto it until the thermocouple inside the cloth says -40 C. Rather unscientific, if I do say so myself. So we're trying to come up with a quick and simple solution, as buying the proper lab freezer around here would take much longer than I have time to wait for.
A few others and I have thought up a way to use our liquid nitrogen in another way, basically creating an insulated container for the liquid nitrogen and placing the samples in another compartment near the nitrogen at a place our thermocouple says is -40 to -50 Celsius.
Is there a better way to attain -40 to -50 degrees Celsius?
Thanks!
I am doing some undergraduate work in Sweden, and for one of my tests, I need to place a material at -40 to about -50 degrees Celsius for a short period of time for thermal cycling. Unfortunately, my access to equipment is rather limited here
The current method we're using is just wrapping it in a cloth and dripping liquid nitrogen onto it until the thermocouple inside the cloth says -40 C. Rather unscientific, if I do say so myself. So we're trying to come up with a quick and simple solution, as buying the proper lab freezer around here would take much longer than I have time to wait for.
A few others and I have thought up a way to use our liquid nitrogen in another way, basically creating an insulated container for the liquid nitrogen and placing the samples in another compartment near the nitrogen at a place our thermocouple says is -40 to -50 Celsius.
Is there a better way to attain -40 to -50 degrees Celsius?
Thanks!
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