LN2 is usually provided by a company that also provides O2, Co2, and other gas tanks. Airgas is the one my laboratory gets its LN2 from. That being said, your going to have to find out how to get them to sell it to you since its not for industrial/scientific use. If you can have your school contact the company officially, you are more likely to get it. Good luck.
I get DI at the local grocery store. As far as LN2, I say go to an industrial gases supplier. Call a welding shop for recommendations.
If it were me I'd try to figure out how to do it with DI. Safer, since your already playing with volatile propellants. One less thing, IMO. Probably cheaper too, since you'd need a dewars container to hold the LN2, whereas DI you could just use a cooler.
Yes, most industrial gas suppliers would have LN2 as well as dry ice.
When I used to run benchmarks with dry ice, I used a cooler I bought at Wal-Mart. Whenever I went to the supplier to get more DI, the worker who loaded it into my cooler would say, "You must be throwing a big party tonight."
you can buy dry ice at meijers if you have one of them around! as for LN2 you will have to go to a gas supplier to get it as far as I know.
Thanks for the input. I'll contact school to see if they can do something as well
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