A magnetizer can be used to magnetize material.  Most pulse magetizing systems can be used to calibrate and demagnetize anisotropic and isotropic magnet materials of varied sizes.  Especially all high-coercivity magnet materials such as Sm2Co17 or NdFeB magnets can easily be magnetized within a short cycle time.  A typical system consists of a power supply, capacitors and coils controlled by a computer.  The system charges the capacitors to a high voltage and discharges quickly to create a field pulse. 

Conditioners are used to reduce the material magnetization to a desired level. 

Degauss coils can be used to reduce the magnetization of apparatus.