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Air Products technician installing helium dewars for MRI magnet

MRI Filling

The supply security and reliability you require

Magnetic Resonance Imaging (MRI) is an imaging technology used in radiology departments to take detailed pictures of the insides of a patient's body to help diagnose medical conditions. The MRI equipment are fitted with superconductive magnet coils that require liquid helium to keep them cold without disruption.

Air Products offers °KeepCOLD® MRI magnet filling services using state-of-the-art liquid helium dewars, ensuring high transfer efficiency and maximised uptime, so your staff will have more time to focus on patients and other related activities.

Contact Air Products today and let us be the security behind your supply.

Download °KeepCOLD® Filling and Maintenance Services for MRI Equipment brochure


  • Reliable global helium supply
  • Vacuum jacketed (JV) helium transfer lines
  • Dewars equipped with stingers giving higher transfer efficiency and minimum product loss
  • ISO 9001 certified technicians
  • Full range of services : magnet cool downs, ice block removals, emergency response service and compressor maintenance (including helium gas charging and routine compressor replacement)

Interested in more information on our °KeepCOLD® service?

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Ask the Expert

“Why is helium used in MRI magnets?”
Helium is the only gas that boils at 4.2K in its liquid form which is the temperature required for the superconductive magnet coils.
Close-up photo of the filling part of a liquid helium dewar

State-of-the-Art Liquid Helium Dewars

  • Air Products owns, maintains, and transports thousands of liquid helium dewars around the world
  • Supplied in 60 to 500 liter sizes, they are all superinsulated to reduce boil-off
  • Equipped with stingers yielding the highest transfer efficiency. This means less liquid helium loss from the dewar to the magnet
  • Our 250 and 500 liter sizes are mounted on bases with casters for greater stability and maneuverability
  • Non-magnetic construction provides compatibility with MRI and other magnetic environments
  • Each dewar is labeled with information on safe handling of product and vessel storage
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Gas Supply Options

Air Products gases, typically provided in gaseous and liquid form, enable customers in a wide range of industries to improve their environmental performance, product quality, and productivity.


An inert gas for cryogenic, heat transfer, shielding, leak detection, analytical and lifting applications


For Magnetic Resonance Imagery (MRI) and other cryogenic applications, Air Products supplies liquid helium in 60, 100, 250 and 500 liter ruggedly constructed and super-insulated dewars.