Paper Beating Degree Tester stainless steel laboratory equipment

Schopper-Riegler Beating Degree Tester

The Paper Beating Degree Tester is designed to measure pulp freeness and refining degree (SR value) based on the Schopper-Riegler method. It is widely used in paper mills, pulp laboratories, and research institutions for drainage performance evaluation.
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Description

Paper Beating Degree Tester stainless steel laboratory equipment

Product Description

The Paper Beating Degree Tester is used for pulp freeness testing, drainage analysis and refining degree evaluation in pulp and paper laboratories. The equipment operates according to the Schopper-Riegler (SR) method, which determines pulp drainability based on the relationship between fiber refining degree and water drainage speed.

The tester is widely used for pulp refining control, fiber fibrillation analysis and laboratory pulp testing. By measuring the drainage rate and residual water volume of pulp suspension under standardized conditions, the equipment provides accurate and repeatable SR value measurement for papermaking quality evaluation.

The instrument features a manually compressed sealing cone mechanism and precision leveling system to ensure stable sealing performance and reliable testing accuracy. The main structure is manufactured from corrosion-resistant stainless steel, while the testing cylinder is made of durable brass for long-term laboratory operation.

TECHNICAL SPECIFICATIONS

Parameter Specification
Measurement Range 1 – 100 SR
Graduation Value 1 SR
Overflow Drainage Time 149 ± 1 s
Residual Volume 7.5 – 8 mL
Sealing Cone Rising Speed 100 ± 10 mm/s
Test Temperature 10 – 30°C
Relative Humidity ≤ 85%
Dimensions 450 × 250 × 1160 mm
Net Weight Approx. 30 kg
Structure Material Stainless Steel
Test Cylinder Brass

COMPLIANCE STANDARDS

  • ISO 5267-1 – Pulps — Determination of drainability — Schopper-Riegler method

  • GB 3332 – Determination of beating degree of pulp

Working Principle

The tester measures pulp drainability according to the Schopper-Riegler method. During testing, water drains through the screen under standardized conditions, and the drainage rate together with residual water volume is used to determine the SR value.

Higher SR values indicate higher refining degree, increased fiber fibrillation and slower drainage performance.

APPLICATIONS

  • Paper mill laboratory testing

  • Pulp refining process control

  • Quality inspection departments

  • Research institutes and universities

  • Fiber morphology and drainage analysis

STANDARD CONFIGURATION

  • Main Unit × 1

  • Brass Screens × 2

  • Rubber Sealing Rings × 2

  • Graduated Cylinders × 2

  • Wrench × 1

  • Technical Documentation × 1

FAQ

1. What is beating degree in paper testing?

Beating degree (SR value) indicates pulp refining level and its drainage performance.

2. What is the measurement range?

The tester measures from 1 to 100 SR.

3. Is the equipment compliant with international standards?

Yes, it complies with ISO 5267-1 and GB 3332.

4. What industries use this instrument?

Paper mills, pulp producers, laboratories, and research institutions.

5. What material is the equipment made of?

The body is stainless steel and the test cylinder is brass.

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