Absolute depth filter with perforated surface made entirely of polypropylene


The WFMBA Depth filter with absolute filtration rate is produced in the melt-blow process. The perforated surface offers an enlarged filter surface area as well as a better binding for the continuous fibers on the filter surface. The filter is structured with a consistent pore-structure which decreases towards the middle, allowing a construction without a core support in the centre. The WFMBA melt-blow cartridge can be delivered optionally with open ends on both sides or with standard adapter constructions. The perforated surface area with subsequent depth filter structure ensures a long service life, high dirt-retention capacity and low differential pressures.

Technical Data

Filter medium

100 % polypropylene

Core support




Filter ration

1 – 100 μm, absolute


Max. 80 ̊C

Differential pressure

Max. 4,2 bar at 20 ̊C
Max. 1,2 bar at 80 ̊C
Filter change recommended at 2,0 bar


Internal diameter 28 mm
External diameter 63 mm
Lengths 5“ – 40“

Features and Benefits

  • Enlarged surface area due to perforation
  • Absolute filtration rate
  • Depth filter, finer structured towards the inside
  • Melt-blow continuous fiber, thermic-bound
  • Does not contain binding agents or adhesives
  • Long service life, high dirt-hold capacity
  • Low differential pressure, high flow rate
  • NSF42 and FDA CFR21 Certificate
  • Food Contact Declaration
  • REACH-Declaration• RoHS-Declaration


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