Factor #1: Particle properties

The larger the particle, the easier it should be to separate. Further, if it consists of a highly magnetic material (for instance, iron and low-alloy steel), it will be subject to great capture efficiency.

Factor #2: Fluid features

The fluid conditions that best facilitate the separation of magnetic particles are low oil viscosity and low oil flow rate. If these conditions are met, extremely small, one-micron particles can be separated from the oil efficiently.

Factor #3: Magnet design

Magnetic filters that use high-flux magnets and are installed in a fashion that grows high-gradient magnetic will be the most efficient.