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Compressed Nitrogen Gas & Liquid Nitrogen

MRI Magnet Cooling and Filling

Our °KeepCOLD® MRI filling and cryo-shielding maintenance services maintains magnets operating with better than 99% uptime. Our highly trained ISO 9001-certified, full-time technicians do thousands of fills annually, with the highest helium transfer efficiency in the industry. °KeepCOLD Services are available 24 hours a day, 365 days a year— for added security and peace of mind. For more medical gases information, please see our Resource Center.

Other Applications

Product NameDescription/BenefitsDownloads

Liquid Nitrogen

Nitrogen constitutes 78.03% of the air, has a gaseous specific gravity of 0.967, and has a boiling point of -320.5°F (-195.8°C) at atmospheric pressure. It is colorless, odorless, and tasteless. Liquid nitrogen is a lower cost product that can be used in the preliminary cooling of MRI or NMR magnets. Liquid nitrogen is delivered in dewars which is then transferred to the magnet. The nitrogen cools the magnet to between -330°F to -321°F (-203°C to -196°C). Once the optimum temperature is reached, the nitrogen is purged from the vessel and liquid helium is transferred to the magnet. The liquid nitrogen enables the magnet to be more receptive to the liquid helium.

Nitrogen constitutes 78.03% of the air, has a gaseous specific gravity of 0.967, and has a boiling point of -320.5°F (-195.8°C) at atmospheric pressure. It is colorless, odorless, and tasteless. Liquid nitrogen is a lower cost product that can be used in the preliminary cooling of MRI or NMR magnets. Liquid nitrogen is delivered in dewars which is then transferred to the magnet. The nitrogen cools the magnet to between -330°F to -321°F (-203°C to -196°C). Once the optimum temperature is reached, the nitrogen is purged from the vessel and liquid helium is transferred to the magnet. The liquid nitrogen enables the magnet to be more receptive to the liquid helium.

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