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Products  > Messmer Büchel Schopper-Reigler Freeness Tester 33-29

Messmer Büchel Schopper-Reigler Freeness Tester 33-29

The Schopper-Riegler Freeness Tester 33-29 will accurately determine how quickly any diluted pulp solutions will drain.


Brought to you by Messmer Büchel, our paper inspection specialist brand, our Schopper Riegler freeness tester 33-29 reliably determines the rate of drainage and expresses it in a Schopper Riegler (SR) value.  

Are you involved in paper making? When you need to make consistently high quality sheets, careful examination of the surface conditions and swelling of the fibers is important. The good news is, our Schopper Riegler freeness tester 33-29 helps you to achieve freeness of pulp testing perfection. 

What is the Schopper Riegler freeness value?

It’s understood that the rate of drainage is related to surface conditions, the fiber swelling and the work done on the fiber during beating and refining. The Schopper Riegler freeness value represents the inverse of the volume of water collected, divided by 10. 

Quality Schopper Riegler freeness testing as standard  

The Schopper-Riegler Freeness Tester 33-29 was developed to meet many international standards, including ISO 5267/1, TAPPI T 227, BS 6035/1 and SCAN C19.  

Schopper Riegler freeness tester accessories  

Our Schopper Riegler freeness tester comes with a variety of accessories, including a calibrated nozzle and screen plate plus two measuring cylinders. 

Schopper Riegler freeness tester choices 

We make two models of Schopper Riegler freeness tester. The first is a free-standing, stainless steel benchtop design that’s corrosion resistant. The second option is a solid, wall mounted model made from brass. 

You may also be interested in our Canadian Standard Freeness Tester CSFT 33-23 which was developed to conform to the TAPPI T227 Canadian standard freeness method. 

Included Accessories

  • Measuring cylinder 
  • Wire removal tool 
  • Consistency cups 5-6-7%

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The Problem

Proper calibration of your inspection devices is essential for a long and accurate life of service. A leading pet food manufacturer discovered this when shoddy servicing created a raft of problems with their burst and creep testing equipment.  

Our experts quickly identified and rectified the pre-existing problems. Now, they’re delighted to rely upon a trusted test and inspection partner with Industrial Physics.   

Scott Chambers, Quality Technician at Mars Inc., said,

“I was very happy to be one of the first companies to participate in the mobile calibration program. Ryan Moreno was my technician and was very personable, knowledgeable, and accommodating. The calibrations he performed were very efficient. I like having a technician on site one on one to answer any question I had. Also, not having to ship my BT-Integra units was a major plus. looking forward to future visits at Mars Petcare KKC.”

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