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Pneumatic Canadian Freeness Tester

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Pneumatic Canadian Freeness Tester
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Pneumatic Canadian Freeness Tester

The Canadian Freeness Tester determines the drainability of pulp suspensions.  Drainability is the measurable index of the efficiency of refining process.

Refining of pulps is one of the most important stages in the paper production process and because it consumes much energy and strongly influences the sheet forming and physical properties.

This bench top operated equipment includes levelling feet and a precision bulls-eye level.  Lids for the drainage chamber are pneumatically driven to ensure simple, accurate and quick operation.


  • Pulp


  • Calibrated bottom orifice: (74.7 ± 0.7) s for 1L of H2O
  • Drainage chamber volume: 1000mL
  • Drainage area: 81cm2
  • Air supply 6 bar, instrument quality
  • Air consumption 0.1m3/h
  • Stainless steel and chromed bronze cast components
  • Calibrated standard screen plate (PAPRICAN)
  • Optional Filter for water
  • Optional CF-DR device to remove fibres from the drainage chamber


  • Easy to use
  • Fast measurement speed
  • Accurate


  • ISO 5267/2 - Pulps — Determination of drainability — Part 2: "Canadian Standard" freeness method
  • TAPPI T227 - Freeness of pulp (Canadian standard method) , Test Method T 227 om-17
  • SCAN C21/65

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Pneumatic Canadian Freeness Tester
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