Particle Counting Test, Laser- Blocking :: METALUX - The Lubrication Maintainence Specialist

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Test equipment	Internorman laser particle counter with BSS (bottle sampling) unit
Sample size	200ml (recommended), 120ml (minimum, no dilution)
Standard	ISO 4406 reporting
Unit	Cleanliness class accordance to ISO Number of particles in size classes of > 4µ, > 6µ, > 14µ
Test methodology	Laser-blocking particle counting test works by shining a laser perpendicular to a capillary detection zone. The particles passing through the capillary detection zone then will cause the formation of shadows on a detector opposite the laser. The detector will then be able to determine the size and amount of particle from the shadow formed It should be noted that a false positve result might be reported from optical particle counts. Both air bubbles, and free and emulsified water appear as if they are a particle using the optical particle counting method. Air Bubbles can be removed by using an ultrasonic bath and vacuum de-gassing. Metalux currently does not perform water masking with solvents, but an ASTM is currently available for dilution and removal of water. This technique will be reviewed for near future application.
Notes (application)	Particles will cause abrasion wear, affect machinery performance and MTBF. Particles in the lubricant could also increase lubricant degradation rates.
Suitable for systems	Especially useful for hydraulic systems that need clean oils for optimal operations. Also suitable for Oils from turbine, compressor, pump, blower, motor, and circulating systems.