Where can I find larde spray units for liquid nitrogen?

Question

I have a bearing I want to press into a piston and I need to cool it down using liquid nitrogen. Where can I find an industrial refilable or reusable spray unit to accomplish this task?

Answer 1

As you can see from this reference buying liquid nitrogen isn't going to be cheap. Not to mention, you will be paying the shipping charge and the rental unit on the cylinder. Oh, I forgot, you will also have to buy a regulator, which will probably cost you a few hundred dollars. Don't forget to mention the fact that you will be using it to make liquid nitrogen so they can supply you with the right volume of gas.

ref: http://www.scottecatalog.com/ScottGas.nsf/(PureDetails)?OpenAgent&Key=NITROGEN

To make the liquid nitrogen you just need a dewar flask (I hope you have one of those).

Answer 2

Liquid nitrogen is prepared by appling high pressure in closed chamber of nitrogen gas. When it is liquidified its temperature falls below -200 degree centrigrade and becomes highly volatile.And if it is applied on human body in normal temperature it acts as burning agent.And now a days liquid nitrogen is used to sterile surgical instruments because most of the germs can't survive at such high temperature differance.So, I think your doctor has burned the pimple.For the rest part ask your doctor.

Answer 3

You might be able to accomplish this with an ethanol/dry ice bath if you don't have access to nitrogen dewars and transfer equipment. You can use a cooler flask to make the solution (get absolute for the ethanol at a liquor store) and you can get dry ice at the grocery store. Temperautre is about -80 ºC once cooled, but the mixture is flammable, so be careful.

Answer 4

http://www.brymill.com/catalog_1_cryac.htm

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