Where Can I Find a Quality Dewar Flask for Under $400?

[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 a lot, but to rent a dewar flask is fairly expensive he says and they're not always available.

A couple of friends and I are deciding to surprise him at the end of this year with a "you're awesome, thank you" gift at the end of this year. We were planning on getting him a Dewar Flask, about 4 L big. If anyone can help me out in picking out a good quality one for under around 400$ that would be great.

Thanks.

 

[oedipa maas]

Alas, it's a bit out of your budget:

http://www.fishersci.com/wps/portal/PRODUCTDETAIL?productId=1588209&catalogId=29104&pos=1&catCode=RE_SC&fromCat=yes&keepSessionSearchOutPut=true&brCategoryId=null&hlpi=y&fromSearch=Y

 

[marcusl]

Nice idea! Check out these in your price range.
http://quarkglass.thomasnet.com/viewitems/dewar-flask/qf-29e-flask-dewar-lab-grade?&forward=1"

 

[lisab]

Don't know if you have your heart set on something new, but Ebay has several used ones that are very affordable.

http://search.ebay.com/dewar-flask_W0QQfromZR41

 

[Danger]

To me, a Dewar flask is my hip pocket Scotch supply. You can get one for about $5.

 

[Greg Bernhardt]

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

 

[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/"

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.

 

[gravenewworld]

Here is a plastic dewar flask specifically designed for LN2 and other liquid gases.

http://vwrlabshop.com/dewar-flasks-high-density-polyethylene-nalgene/p/0007793/

$298 for 2

or $266 for 1 10 L dewar

http://vwrlabshop.com/stainless-steel-thermo-flasks-barnsteadlab-line/p/0007791/

$400 for a 4.5 L steel one.

 

[binzing]

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.

 

[Gokul43201]

A couple of friends and I are deciding to surprise him at the end of this year with a "you're awesome, thank you" gift at the end of this year. We were planning on getting him a Dewar Flask, about 4 L big. If anyone can help me out in picking out a good quality one for under around 400$ that would be great.

Thanks.

With $400, you should be able to easily buy a nice, silvered glass 10L dewar if you don't mind buying used.

 

[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, I am done with this sh!t! Hes a good professor though, and a good guy. Hes pretty young for a professor, early 30's.