1. Mar 4, 2008

### Guthran

I wasn't quite sure which category this fit into, and if it's not this one, I'm sorry.

A couple of friends and I are great friends with our physics teacher. He is a great guy.
He likes to use LN2 alot, but to rent a dewar flask is fairly expensive he says and they're not always available.

6. Mar 4, 2008

### Greg Bernhardt

awesome, I've always wanted to get a flask!

7. Mar 4, 2008

### Danger

If, for some reason, you can't manage to get an affordable Dewar flask, you could always go with a Klein bottle instead.
http://www.kleinbottle.com/" [Broken]

Actually, I hadn't thought about this before, but that would be a great way to keep my stash away from parasitic visitors who aren't smart enough to get the Scotch out.

Last edited by a moderator: May 3, 2017
8. Mar 4, 2008

9. Mar 4, 2008

OK, I know you wanted to buy one, but here's what our physics teacher said he used to do. He'd go to a welding supply store to buy some LN2 and when asked if he had a Dewar flask he'd simply say no and they would let him sign for one and put down something like a $500 deposit. Sounds like a cool gift. 10. Mar 4, 2008 ### Gokul43201 Staff Emeritus With$400, you should be able to easily buy a nice, silvered glass 10L dewar if you don't mind buying used.

Last edited: Mar 4, 2008
11. Mar 4, 2008

### Cyrus

At the end of my last semester as an undergrad, I bought my aero professor a bottle of booze because I enjoyed his class the most of all the ones I had that semester. That was the only time I bought a teacher anything. It was more like, cheers, im done with this sh!t! Hes a good professor though, and a good guy. Hes pretty young for a professor, early 30's.