Handle magnets with care!
Personnel wearing pacemakers should not handle magnets.
Magnets should be kept away from sensitive electronic equipment.
Modern magnet materials are extremely strong magnetically and somewhat weak mechanically. Any person required to handle magnets should be appropriately trained about the potential dangers of handling magnets. Injury is possible to personnel, and magnets themselves can easily get damaged if allowed to snap towards each other, or if nearby metal objects are allowed to be attracted to the magnets.
Note that magnets are classified as dangerous goods for air transportation purposes, and strict air shipment rules must be followed for this purpose regarding packaging, labeling and certifications.
Materials with low coercive forces such as Alnico 5 must be carefully handled and stored when received in a magnetized condition. When stored, these magnets should be maintained on a "keeper" which provides a closed loop protecting the magnet from adverse fields. Bringing together like poles in repulsion would lead to irreversible, though re-magnetizable, losses.
Samarium Cobalt should be carefully handled and stored due to the extremely brittle nature of the material.
Uncoated Neodymium magnets should be stored so as to minimize the risk of corrosion.
In general, it is preferable to store magnetized materials under vacuum-sealed film so that the magnets do not collect ferromagnetic dust particles over time, since cleaning this accumulated dust is time consuming.
