Where can I find Liquid Argon or liquid nitrogen?

Question

Where can I find Liquid Argon or liquid nitrogen?

Answer 1

These are available commercially, check the yellow pages or the net for industrial gases.  

Answer 2

By the compression, cooling, expansion, recompression and further cooling and expansion of Air until it condenses to Liquid air.

This is then Fractionally Distilled to separate the condensed components.

Oxygen will separate at -183°C; Argon at -186°C and Nitrogen at -196°C.

(It's a very involved procedure).

(Industrially, these products can be purchased. Labs can also obtain them from the manufacturers).

Answer 3

some welding suppliers may have this. otherwise industrial gas supplys.

cryogenicly stored gasses may require haz-mat certifications.

Answer 4

liquid nitrogen i think you can get from any proper hospital as it is i think used in some treatments.

about argon, i dont know about liquid, but the gas u can get from the light bulbs as u may be aware.

regards