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A Proudly Canadian Corporation  Serving the pulp, paper, and board industry for three generations     

A Brief History

Pulmac Inc was incorporated in 2003 and, in 2012, became a founding shareholder in Pulmac Systems International Inc of Williston, Vermont. Pulmac Inc was responsible for all manufacturing and service until it formally broke with Pulmac Systems in May, 2015. Changing its name to QS Fibre Inc in 2016, the Montreal-based company  offers the  AutoScan for on or off-line determination of fibre, shive, and fines size distributions as well as competitive products and services for :

  • Pulmac MasterScreen, Z-Span Tester, Automated Sheet Former, Beater, and Dewatering Device.
  • Provisioning of testing services, in-mill service support, and mill studies

QS Fibre is owned and  operated by Brent Cowan, son of Wavell Cowan and grandson of inventor, industrialist and Pulmac patriarch, Eli Cowan.

W. Brent Cowan, CD MSc


QS Fibre : Committed to integrity

Atholville NB Pulp MillAtholville NB Pulp Mill

Welcome to QS Fibre Inc! We hope you will enjoy your stay and that you will find the information here to be useful. We pay great attention to the quality of our products and services. You can find detailed information about them online here or contact our international agents or our customer service team for additional help.

MISSION: QS Fibre Inc strives to help mill operators around the world make their pulp, paper, and board,   ...BETTER!   

We go about it by providing pulp and paper mill operators with the means to quickly determine sources of fibre quality variability and zero in on their root causes. Our signature QS AutoScan Fibre Classifier maps fibre distributions on or off-line by length, width, shape, and luminosity. Particles on the large end of the chart are shives. Those at the smaller end are fines. Tracking these distributions helps operators keep a close watch on variability and can be a very useful tool for optimizing process. Our QS FibreScreen is a masterscreen  (TAPPI T274 sp13) and sets the industry standard for shive and stickies measurement. Our Zero-Span Tester is the perfect instrument for direct measurement of fibre and pulp strength. This direct measurement correlates well with more cumbersome physical property tests and, for a long time now, replaces viscosity.

Through the fibreline and stock prep on to the reel: fibre is the  1 common  denominator 

QS Fibre helps in the building of a comprehensive fibre knowledge base.  

QS Fibre helps in acting to influence causes in order to shape their related effects.