In the event that you wish to design your own magnetic shielding, you may find the following information useful. MuShield engineers are available for consultation should you require assistance.
Magnetic shielding protects electronic circuits from magnetic field interference.
Usually, sources of this interference include permanent magnets, transformers, motors, solenoids, and cables. Magnetic shields provide a path around sensitive areas to deflect magnetic flux. In addition, shielding may contain magnetic flux around a component that generates flux. The ability to conduct magnetic lines of force is called permeability, and in a magnetic shield, the degree of permeability is expressed numerically. The standard or base line is free space with a rating of one, compared to shield materials which range from about 200 to 350,000.