This part of ISO 12500 specifies the test layout and test procedures required for testing coalescingfilters used in compressed-air systems to determine their effectiveness in removing oil aerosols.

This part of ISO 12500 provides the means to indicate performance characteristics of the pressure drop and the capability of removing oil aerosols.

This part of ISO 12500 defines one method of presenting filter performance as outlet oil aerosol concentration stated in milligrams per cubic metre from results obtained under standard rating parameters.