WSO Mist Collector
Versatile Collector for Water, Smoke or Oil Mist (WSO)
The Donaldson Torit® WSO mist collector is the only collector that filters three types of mist (water, smoke, oil) in one collector – simply by changing the mist filter.
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Donaldson Torit WSO Mist Collector
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.
Features
- 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
What Makes WSO Different?
The WSO mist collector can be configured to meet your facility’s requirements: machine mountable, floor-mounted stand, and ducted cellular and central systems.

Flexible Design & Versitile Applications
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

WSO Cross-Flow Filter
Design
Cross-flow filter design for better drainage means longer filter life. Dirty air flows horizontally through the walls of the WSO filter, perpendicular to drainage of collected and coalesced mist. This design promotes optimum drainage, which extends filter life and returns collected coolant for re-use.
Media
Proprietary Synteq XP Media Technology is a revolutionary new media for mist collection that provides high efficiency, low operating pressure drop, and long filter life when compared to traditional media.
Synteq™ XP Media Technology with Resin-Frere Binding Fibers
- Engineered blend of small and large fibers, with proprietary, resin-free bonding system
- Small fibers are scientifically proven to increase efficiency
- Large fibers provide structural support and clear drain channels
- Proprietary bonding system stabilizes pore structure for optimum performance

Filter Types
Choose the Best Filter for Your Application
- Water Soluble: Typical Particle size: 2 – 20 microns
- Smoke: Typical Particle size: 0.07 – 1.2 micron
- Oil: Typical particle size: 0.8 – 5 micron