A filter medium that holds contaminant by mechanical means.



Related Terms

DEPTH FILTER

A filter medium that retains contaminants primarily within tortuous passages.

FILTRATION

The physical or mechanical process of separating insoluble particulate matter from a fluid, such as air or liquid, by passing the fluid through a filter medium that will not allow the particulates to pass through it.

SINTERED MEDIUM

A metallic or nonmetallic filter medium processed to cause diffusion bonds at all contacting points.

NONWOVEN MEDIUM

A filter medium composed of a mat of fibers.

ADSORBENT FILTER

A filter medium primarily intended to hold soluble and insoluble contaminants on its surface by molecular adhesion.

POROSITY

The ratio of pore volume to total volume of a filter medium expressed as a percent.

PORE

A small channel or opening in a filter medium which allows passage of fluid.

FATIGUED

A structural failure of the filter medium due to flexing caused by cyclic differential pressure.

ADSORPTIVE FILTRATION

The attraction to, and retention of particles in, a filter medium by electrostatic forces, or by molecular attraction between the particles and the medium.

FILTER UNLOADING

The release of contaminant that was initially captured by the filter medium.

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