WSO Mist Collector

Versatile Collector for Water, Smoke or Oil Mist

Donaldson WSO Mist Collector hero image | AIRPLUS Industrial

WSO mist collectors are the only collectors that filter three types of mist (water, smoke, oil) in one collector – simply by changing the mist filter.

WSO Mist Collectors

The versatile Donaldson Torit® WSO Mist Collector provides three filter solutions for water-soluble coolant, straight oil, and the most challenging, oily smoke. The WSO uses revolutionary Synteq™ XP Media Technology engineered for superior draining, resulting in lower pressure drop and longer filter life.


The WSO can be modified with a simple filter change, leading to leaner operation, cost savings and cleaner plant air.


  • 3 in 1 solutions for mist applications
  • Advanced Synteq XP high efficiency media
  • Cross-flow design for better drainage
  • Easy to change cartridge filters
  • Energy savings
  • Continuous-duty design
  • Lower life cycle costs
  • Quiet operation
  • Configurations for machine mounting, floor stands, or ducted central systems
  • UL-approved electrical components

The WSO Difference

The WSO mist collector can be configured to meet your facility’s requirements: machine mountable, floor-mounted stand, and ducted cellular and central systems.

Donaldson WSO Mist Collector Operational Difference | AIRPLUS Industrial
WSO Mist Collector Operational Difference

Versatile in Application, Flexible in Design

3rd Stage: Final Filter (Optional)
  • DOP
  • 95% efficient on .3 micron mist and smoke
  • HEPA
  • 99.97% efficient on .3 micron mist and smoke
2nd Stage: Primary Filter (Select One)
  • Synteq XP – W
    • For mist from water-soluble coolant
    • Economical, fast draining, for heavy water-based liquid load

  • Synteq XP – S
    • For smoke from machining
    • Highest efficiency for challenging applications

  • Synteq XP – O
    • For mist from straight oil machining
    • Efficiency designed for small oil aerosols
1st Stage: Prefilter Options (Select One)
  • Metal Screen
  • For heavier dust/grit from wet grinding
  • Metal Mesh
  • For most water-soluble mist
  • Polypropylene Mesh
  • For most straight oil mist
  • High Efficiency 1st Stage
  • For oily smoke
Donaldson WSO Mist Collector 3-stage operation | AIRPLUS Industrial


Donaldson WSO Mist Collector brochure download icon | AIRPLUS Industrial
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Donaldson WSO Mist Collector - Machine Mountable installation & operation manual download icon | AIRPLUS Industrial
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Donaldson WSO Mist Collector - 20, 25-1, 25-2 & 25-3 installation & operation manual download icon | AIRPLUS Industrial
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Choosing the Right Mist Collector for Your Facility

Choosing the proper mist-collection system for your application is dependent upon many factors. AIRPLUS Industrial has 30+ years of experience in designing, sourcing, installing and maintaining mist collection systems, we can help you choose the right system for your facility.