: Offers both compressed nitrogen (>99.998% purity) and refrigerated liquid nitrogen.

: Buying liquid nitrogen requires a specialized vacuum-insulated container called a Dewar . Many suppliers will not fill a container that hasn't been recently inspected.

: Offers smaller 17-liter pure nitrogen cylinders (~$62.95) typically used for equipment calibration.

To buy pure nitrogen, you can choose between compressed gas cylinders (typical for welding or industrial use) and liquid nitrogen (common for cooling or cryogenics). Where to Buy Locally