When choosing the appropriate filter for an application the properties of the fluid
surrounding the filter have to be considered. The following features of the
surrounding fluid are important:
• temperature
• humidity
• flow condition
• mass flow
• chemical composition.
These qualities affect the filter’s performance. In addition the fibre material used,
the assembly and the forces and stress exercised on the filter during operation need
to be considered. Finally, also the particle properties, for example particle size,
particle size distribution and particle material, have to be considered. Taking into
account these manifold types of requirements and boundary conditions the available
filter media can be classified.