Gas Suppliers

• You can buy liquid nitrogen from a welding or gas supplier. Call ahead to determine the size of a container needed for storage since most suppliers will not sell small amounts of liquid nitrogen.
  
  

Cryogenics Equipment Dealers

• Cryogenics labs use liquid nitrogen to preserve tissue and to oxidize fuel. Cryogenic suppliers are available online; however most will sell only to institutions. For public use, contact the chemistry department at a local university or a hospital for purchase or give away.
  
  

Homemade

• You can compress air and cool it in a metal tank to make your own liquid nitrogen using materials from a home improvement store. But producing it incorrectly can lead to suffocation or frost bite.