Luxfer Gas Cylinders sometimes receives inquiries about whether
our aluminum and aluminum-lined composite medical cylinders are MRI
compatible. The term "MR or MRI Compatible" has been superseded by the
current ASTM International terminology: "MR Conditional," which is
defined as "an item that has been demonstrated to pose no known hazards
in a specified MRI environment with specified conditions of use." Field
conditions that define a particular MRI environment include static
magnetic field strength, spatial gradient, dB/dt (time varying magnetic
fields), radio frequency (RF) fields and specific absorption rate (SAR).
Whichever term is used, the question remains: Can Luxfer medical
cylinders be safely used in close proximity to magnetic resonance
imaging (MRI) and other types of medical equipment that emit magnetic
fields? The general answer to that question is: Yes.
addition to our own testing, Luxfer commissioned in-depth third-party
testing of our medical cylinders, covering all combinations of aluminum
alloy and monolithic/composite construction. The third-party test report
concluded: "For each cylinder tested, no apparent magnetic field
interactions were detected under the conditional used for testing. Thus,
each cylinder product may be considered 'MR Conditional at 3-Tesla or
Please note that Luxfer's statement and the cited test results apply only to Luxfer aluminum alloy and composite cylinders and do not
apply to valves, regulators, handles, carts or any other equipment that
may be either attached to or used in combination with Luxfer cylinders.
Always ensure that any such ancillary equipment also meets ASTM or
other applicable safety criteria for use in proximity to MRI equipment.