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Xebec's criteria for the economical choice of a filter are:
- High flow capabilities
- Low differential pressure
- High dirt-holding capacity by integrating the prefilter medium with the final filtration layers
- Long service life
- ISO controlled manufacturing process
Three filter grades are available:
- Filter Element Grade AE
Efficiency 99.99% at 1 micron. Oil retention down to 0.5 ppm per ISO 8573.1.
- Filter Element Grade PE
Efficiency 99.9999% at 0.01 microns. Oil retention down to 0.01 ppm per ISO 8573.1.
- Filter Element Grade AC
Activated carbon element which adsorbs oil vapor down to 0.001 ppm. It is always preceded by a PE filter series to remove aerosols.

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