Looking for a source on a small amount of Liquid Nitrogen....is that something a regular joe can buy?
Iam not using it for metallurgy, I will use it for something totally unrelated. I need to freeze some plastics for a project I am working on.

bennett

call up your welding and medical gas places and one of them might have it or derect you to the right place. you will most likely have to put a deposit or "rent" one of the handling containers plas the purchace of the nitrogen. I used to use it for cryogenicly tempering sword and knife blades:evil: I used to get it threw one of the welding gas supliers.
dont put anything you want to keep in there and then drop it.



(i didnt tell ya this, put a hotdog in the finger of a cheap pair of work gloves and stick it in, freak out and smack it against a table and watch the exspresions you get from those around you as your "finger" exsplodes)

Better yet, put the hot dog in your pants......


yeah, playing with liquid Nitrogen, Darwin Award waiting to happen.

Originally posted by 4Bangler
Better yet, put the hot dog in your pants......


yeah, playing with liquid Nitrogen, Darwin Award waiting to happen.
hey there is only so far i will push a joke
liquid nitrogen by my crotch is too far:eek:
we use liquid nitrogen for freezing warts, i am asking where we get it and if a civilian can pick it up. will let you know

Thanks for checkin.....what's this civilian crap you speak of??:) :)

ohhh well if you are military make some frends down at medical and ask them to borrow one of the portable containers of nitrogen they use for wart freezing.:D
but i never said that:flipoff2:

You should be able to buy it, and rent the dewer and some gloves. You don't need training, just common sense. A little goes a long way...another source is the chemistry or physics department of your local college or high school. The lab equipment manager would probably *give* you some for a 6-pack.

If the place is close to you, and you only need it for a day or two, they might even rent you a small liquid nitrogen approved "thermos", it'll hold a quart or two for a few days, if it's mostly closed. So, if you're just dipping things, open it, dip real quick, close it up.

Originally posted by Pazuzu
...another source is the chemistry or physics department of your local college or high school. The lab equipment manager would probably *give* you some for a 6-pack.

If the place is close to you, and you only need it for a day or two, they might even rent you a small liquid nitrogen approved "thermos", it'll hold a quart or two for a few days, if it's mostly closed. So, if you're just dipping things, open it, dip real quick, close it up.


That's where I got mine for my "experiments".:D
I have a friend who is in posession of the key to the nitrogen. As far as a dewer I've used a regular thermos with a hole drilled in the lid (to bleed off evaporation) and I've also used a gallon milk jug packed in shipping peanuts.

Originally posted by usmcdoc14

hey there is only so far i will push a joke
liquid nitrogen by my crotch is too far:eek:


Maybe I'm a wuss or something, but as a rule, I try to keep all harmful chemicals away from my crotch. :flipoff2:

Originally posted by 4Bangler
Better yet, put the hot dog in your pants......


yeah, playing with liquid Nitrogen, Darwin Award waiting to happen.


:eek: :D NIIIICE ill be reading the awards next year and thinking of you guys

Hey Bennet,
If you lived closer, you could just come over and get some. I get 50 Liters delivered every week. You can get it at your local gas supplier, but you will have to pay a hefty deposit on the Dewar bottle. If you have your own styrofoam container it will be cheap, but it won't last long.

I havent found a project yet that
I couldnt substtute dry ice to get the same
results. takes a little longer but allways
works for me.

ps what is the diference between the two
besides one is liquid and one is a solid ?

temp ?

Most places that have the ability to rebuild hydraulic cylinders, or nitrogen charged suspensions have copious amounts of liquid nitro. We used to get it in the 5x3' cylinders and pour it into a 45 gallon drum cut in half. Drop in the brass bushing for a shock, while another guy tiger-torches the barrel to help it expand... Pick up the bushings with tongs, drop it into the barrel and sledge hammer like a mofo to get it in... if it didn't take, you'd have to gouge out the bushing and do it again...

Anyways, we used to spend the afternoons putting grasshoppers, beetles and frogs into the nitro... Leave em in for 5 minutes and pull em back out. Watch them slowly come back to life and hop around. Put an apple in there and chuck it, watch it 'splode when it hits the ground. We used to kick over the barrel when we were done, and the hole place would turn into a fog..

Anyways, try a welding outlet. They'll have that stuff for sure.

the difference is dry ice is frozen co2 and liquid nitrogen is nitrogen and the temperature difference is extreme, dry ice can give you burns, nitrogen just freezes it solid

Originally posted by Land Crusher

ps what is the diference between the two
besides one is liquid and one is a solid ?

temp ?

Big difference in temperature.

Dry ice is about -90° C, while liquid N2 is about -200° C. Absolute zero is -273° C and you can't get any colder than that.

My friend told me that liquid nitrogen is relitively cheap because it's actually a byproduct from making liquid oxygen and helium.