Schopper Porosity Tester

The Schopper air permeability tester measures the rate at which air passes through paper or fabric under a constant pressure difference, reflecting the material's breathability. It is used for quality control of materials such as paper and non-woven fabrics to ensure that products meet usage requirements.
Selection
Select the measurement range based on the type of material being tested and the permeability range, consider the test standards' requirements for accuracy and pressure differential, confirm the convenience of instrument calibration, match the fixture specifications with the sample size, and evaluate the equipment maintenance costs and operational complexity.
Measurement method

Terms

Standards

Instruments

Measurement range 0-100 ° SR, equipped with a special measuringflask to directly display the Freeness/Schopper-Riegler value, without conversion, the test water temperature is controlled at 20 +/- 0.5 ° C to ensure accurate and reliable detection results.

$ 1004.00

Measurement range 1~ 100 ° SR, sealing cone rising speed 100 +/- 10mm/s, Pulp suspension filtration rate was determined according to Schopper-Riegler method.

$ 1217.00

Measurement range 0~ 100 ° SR, cone rising speed 100 +/- 10mm/s, suitable for all kinds of Pulp suspensions, can use raw materials economically and end the Refining process in time, simple and reliable operation.

$ 1106.00

Test accuracy of +/- 0.01%, resolution 0.00001g/cm ³. Automatic calibration and gas path Self-check function, built-in multi-specification sample measuringflask, anti-splash test process, about 3 minutes to complete the single sample test.

$ 7335.00

Using high voltage DC technology, the maximum detection thickness is 36 mm, the voltage range is 0-30kV fully adjustable, with current limit protective coating and Sensitivity adjustment function, suitable for metallization or slightly wet coating detection.

$ 5992.00

The use of high voltage DC technology can detect 36mm thick coatings, with current limiting function to avoid coating damage, Sensitivity adjustment to adapt to metallization or slightly wet coatings, providing stability testing current and overcharge protection.

$ 6782.00

The static capacity method is used for testing, with a specific surface area ranging from 0.01 m2/g to no upper limit, and a pore size analysis of 3.5 to 5000 angstroms. The modular stainless steel gas circuit design ensures a high vacuum, and the metal dewar bottle maintains a constant temperature. It supports a variety of theoretical model calculations.

$ 23956.00

Measurement range 0-4mm, resolution 0.001mm, contact pressure 100 +/- 10kPa, contact area 2 +/- 0.05cm ², automatic reciprocating motion to complete thickness measurement.

$ 843.00

The static capacity method is used to test the principle, the aperture analytical range is 3.5 to 5000 angstroms, and it is equipped with a modular stainless steel vacuum gas circuit and a metal dewar bottle, which supports DFT and MC theoretical model calculations.

$ 28797.00

Measurement range 0-4mm, contact pressure 100kPa, equipped with dial indicator mechanism, can achieve accurate thickness detection, suitable for a variety of sheet materials.

$ 535.00

Measurement range 0~ 1000ml/min, pressure difference 0.1~ 2.0kpa, stainless steel end cap and pure copper valve anti-corrosion structure, built-in fixture to avoid rubber pad peeling, suitable for a variety of materials Air Permeability accurate test.

$ 1200.00

Manual compression sealing vertebral body design, three-legged leveling mechanism to ensure sealing, Measurement range 0~ 100 ° SR, cone rising speed 100 +/- 10mm/s, overflow port discharge time 149 +/- 1s.

$ 1134.00

Modular stainless steel vacuum circuit design ensures high Vacuum Level, metal dewar bottle to maintain constant liquid nitrogen temperature. Equipped with High Accuracy Sensor and 22-bit AD converter, aperture analytical range 3.5 to 5000 Angstroms, support DFT and MC theoretical model calculations.

$ 19115.00

Measurement range 0~ 100 ° SR, overflow discharge time 149 +/- 1s, using national standard design, can accurately detect Pulp suspension filtration rate.

$ 1171.00

Measurement range 0~ 1000ml/min or 0~ 17µm/(Pa · s), test area 10.0 +/- 0.05cm ², differential pressure accuracy +/- 0.01kPa, clamp ring coaxiality less than 0.05mm, suitable for medium Air Permeability paper testing.

$ 961.00

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