Schopper Riegler Freeness Tester


Do you get requests for SR freeness values?

If so, we have the Schopper Riegler freeness tester at your service.


The rate of drainage can be related to the work done on fiber
during beater and refining.

  • A drainage of 1000 mL corresponds to 0 SR
  • A drainage of 0 ml corresponds to 100 SR

Testing done in accordance with ISO 5267/1.



Call Sandra Fodor at 604-529-2814

Email [email protected]