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

QS Sheet Former: Produce six circular handsheets (64mm dia) that are dry and exhibit excellent formation in just five minutes!

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





QS Fibre Sheet FormerQS Fibre Sheet Former



The QS Fibre Sheet Former is an automated device that takes just 5 minutes to form six highly uniform circular 60 gsm handsheets  (64mm dia) perfect for strenth-testing with  the QS Fibre Zero-Span Tester. 

Approximately 2 grams of pulp are disintegrated, conditioned, and diluted with 2 litres of water. The slurry is then poured into the sheet former's pulp reservoir and the cycle is activated with a push of a button. Five minutes later 6 dry handsheets can be removed from the pick-up bin and used for testing purposes.





Electricity : Single Phase 115/230 VAC 50/60 HZ 15 Amp

Water : Filtered, potable water, standard pressure and flow rate 

Drain : Floor Drain 

Air  :  dried, filtered, 3 litres per sec at  7 bar