Freeness Testers – CSF & SR & Schopper Riegler

For use in pulp and paper mill to determine the freeness of pulp. Choice of models - Canadian Standard Freeness and Schopper - Reigler. SR complies with ISO 5267/1 and CSF complies with ISO 5267/2. CSF screen plates are calibrated by Paprican, Canada.

Both the Canadian Freeness Tester and the Schopper-Riegler Tester are used to determine the rate of drainage of a diluted pulp suspension, the rate of drainage being related to the work done on the fibre during beating or refining. Refining of pulps is one of the most important stages in the paper production process and it strongly influences sheet forming and its physical properties.

Canadian Freeness Tester
This instrument consists of a drainage chamber, equipped with a calibrated screen-plate, and measuring funnel that has two orifices separated by a specified distance. The orifice at the base of the funnel governs the rate of discharge and the run-off water, which is captured and measured with the measuring cylinder to determine the freeness value.The CSF also comprises an aluminium frame for wall mounting, a nickel-plated bronze drainage chamber, a funnel, spreader cone and sealing cone. It is supplied with two graduated measuring cups.
300 Freeness Tester
Schopper-Riegler Tester
This instrument is essentially the same as the CSF except for the used pulp samples, which have a lower concentration. The scale is reversed in comparison with the amount of water collected.The SR also consists of iron cast, large precision level, leveling feet, stainless steel structure and a nickel-plated bronze drainage chamber, a funnel, spreader cone and sealing cone, a plexiglass safety guard and a handle for the drainage chamber.
300 Schopper-Riegler Tester

Features

  • Applicable to all kinds of pulps in aqueous suspension
  • Reliable robustness and precision instruments
  • Non-corrosive components
Canadian Freeness Tester Schopper-Riegler Tester
Physical specifications Dimensions 25 x 27.5 x 60 cm (W x D x H)
Net weight 33 kg
Dimensions 25 x 40 x 120 cm (W x D x H)
Net weight 22 kg
Options • Spare standard 1000 ml measuring cup, graduated in both Schopper-Riegler and ml scales
• Supporting structure for table mounting
• Spare standard 1000 ml measuring cup, graduated in both Schopper-Riegler and ml scales
• Spare standard measuring phosphor bronze wire screen
• Wall mounting compressed air regulator and filter
Performance data • Flow of calibrated bottom orifice 530 ± 5 ml/min
• Calibrated bottom orifice 74.7 ± 0.7 s for 1 l of H2O
• Drainage chamber volume 1000 ml
• Drainage area 100 cm2
• Manual operation
• Speed of the sealing cone 100 ± 10 mm/s
• Calibrated bottom orifice 149.0 ± 1.0 s for 1 l of H2O
• Drainage chamber volume 1000 ml
• Drainage area 100 cm2
• Pneumatic drive 2.0 kgf/cm2
• Measuring scales 0 to 100 SR units/1000 to 0 ml
• Resolution 1 SR unit/10 ml
• Air supply 2 kgf/cm2
• Air consumption 0.1 m3/h
Standards ISO 5267/1, ZM V/7/61, SCAN C19 M3 ISO 5267/2, TAPPI T-227, CPPA CI, SCAN C21
Consumables Click here for details

For more information, please contact our Sales Team on 01223 492081 or via sales@tendringpacific.com