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

A Brief History

Pulmac Inc was a founding shareholder in Pulmac Systems International Inc and was responsible for all Pulmac  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 Releases QualScan Image Analysis Software

Posted 10/7/2017

QS Fibre has just released its new image analysis software. The application runs in Windows 7-10 and all you need in addition to your PC is a flat-bed scanner. Install the freeware software and you're good to go. There is a single platform licensing USB hardware dongle that is available for purchase that will unlock QualScan's full functionality. But the freeware without the dongle will perform a particle count and provide a total area and average area reading. The scanned area of interest is a 205 mm diameter circular region drawn from the reference corner of the scanner bed. With the purchased dongle in place, QualScan provides more complete measurements including perimeter, luminosity, and circularity. It also stores results in a retrievable and exportable database.

Get in touch with QS Fibre or your local representative to get your free download!

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J Fisher LLC Named as US Service Agent

Posted 26/6/2017

Operating from his base in Keene, New Hampshire, Jeff Fisher is back at it. Jeff puts two decades of experience working with Pulmac instruments behind the support he can offer anyone who rings him up. In a word, Jeff is KEENE to join our efforts to help producers using our equipment to make pulp paper and board ...BETTER!

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Introducing AutoScan

Posted 15/6/2017

The AutoScan began its life  in the particle board industry. Lighting limitations restricted its ability to'see' such that the larger particles associated with MDF processes were largely all the AutoScan could sense with a decent degree of repeatable precision. But the steady advances in LED technology has put those restrictions far in the past. Now the AutoScan effortlessly images the smallest pulp fibres and can be used to monitor changes in user pre-determined size classifications. So the  AutoScan can report on levels of fines as well as shives.

Finally, a cheap AND effective means to keep an eye on fibre quality.

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QS Fibre Keeps Busy

Posted 21/4/2017


Over the past two years since we parted ways with Pulmac Systems we have not been inactive. In addition to maintaining our market presence with the QS Fibre AutoImager, we have focussed R & D efforts on the improvement of our  image capturing system and our fine slot cutting capability. 

Brent Cowan, principal, has been able to dedicate additional time in management consulting in support of the Black Watch Military Tattoo,  recently held in Montreal's Bell Centre to mark the 100th anniversary of the Battle of Vimy Ridge. He has also been active further developing the aerial advertising business of friend and business associate, Montreal aviator par excellence, G.P Ciambella.

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