Where can u possibly get liquid nitrogen from?

search for industrial gas supplies call a hospital or university research for a source BE CAREFUL If it spills on you you will get almost instant freezing of tissue just like losing a limb to frostbite it cannot be stored at room temp and pressure get it and use it. look up "dewer flask"

I am wondering the same thing. Let you know if I find anything out. Someone said it was up to like $700. & u can find it in hospitals and universities. They also said that they use it in science labs to keep experiments cold. ?? Don't touch it with your bare skin. It will almost immediately give you frostbite. You have to wear heavy winter gloves. It can also give you tongue burn. . . you don't want to see it because I have before. D: You probably do not have anything you can use to make your own liquid nitrogen (LN2). You can buy it from specialty gas suppliers but they probably sell it in larger quantities than you need (unless you are making many gallons). LN2 is used in many different places. Hospitals and some factories use LN2. Universities often have laboratories where they use LN2 for cooling scientific instruments. If you find a place that is willing to give you or sell you a small quantity (it used to be only about as expensive as beer), you will need a very good thermos bottle, not one of the plastic ones but a real "old fashioned" thermos with a mirrored glass vacuum bottle. If you have a big one of these, one that will hold a quart of hot coffee or more, you can probably store the LN2 overnight and still have some left. Be SURE you do NOT screw the lid on tight. When a little bit of LN2 goes from liquid to gas (boiling), it produces a large volume of gas. If you screw the lid on tight, it will build up pressure and will probably explode. If you use a cheap plastic thermos (without the real vacuum bottle), it might keep LN2 for an hour or two, depending on how big it is and how thoroughly you chill it with LN2 before you leave the place that fills it. You will probably need good winter gloves to handle this because, since it is not a very good insulator, the whole plastic thermos will get very cold. It also may break just because plastics shrink a lot when cooled and, since LN2 is so cold, the plastic will shrink a LOT and it becomes very brittle when it is cold. You need to be careful if you do this. Talk to the people who have the LN2 and ask them to review safety considerations.