CryoProbe Safety
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6.2 Personnel Safety Issues
All persons who work with or in the close vicinity of an NMR system must be informed about
its safety issues and emergency procedures.
If in doubt: Wear goggles and protective gloves, particularly when handling samples!
Inherent Safety
An NMR system, including its components, is designed for inherent safety. Pressure relief
valves, sensors, and error handling in hardware and software have been included to protect
the operator, equipment, and environment.
Technically Qualified Personnel Only
Only persons with a basic technical understanding of electricity, pressurized gas systems,
and cryogens should operate and maintain an NMR system. User interface, system
messages, and manuals require a good understanding of the English language.
No User-serviceable Parts Inside
There are no user-serviceable parts inside a probe/CryoProbe. Do not open these devices.
Magnetic Stray Field
When working within the 0.5 mT (5 Gauss) stray field of the magnet, all magnetic parts and
tools must be avoided or handled with great care.
CAUTION: Deposit mechanical watches and cards with a magnetic strip (e.g. credit cards)
outside the 0.5 mT (5 Gauss) range of the magnet.
General Safety Issues
• NMR laboratories should not be accessible to the public. Make sure access is restricted to
authorized and qualified persons only.
• Strong magnetic fields involve various hazards. The danger zone should be labelled as
precise as possible by the use of barriers, floor-taping or visual warning devices. Consult
your safety manual for specific information concerning the danger zone (0.5 mT/5 Gauss
line).
• Strictly enforce the smoking ban during refill procedures.
6.2.1 First Aid
If cold helium or nitrogen gas comes in contact with eyes or skin, immediately flood the
affected area with cold or tepid water.
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