CATEGORIES

    Gurley DensoMeter

    Overview Knowledge Standards Terms
    The Gurley Permeability Tester evaluates the gas permeability of materials by measuring the gas flow rate through the material under a constant pressure difference. Its principle is based on the flow characteristics of gas within the pores of the material and is used for testing the permeability of materials such as paper and non-woven fabrics. Applications include quality control of filtration materials and packaging materials.
    Selection
    When selecting a Gurley densometer, consider the material type and testing standards, ensuring the instrument's range and accuracy meet requirements. Pay attention to whether the sample clamping method is suitable for the material thickness and verify the validity of the calibration certificate. The operation interface should be user-friendly, and maintenance parts should be readily available. Determine the level of automation based on daily testing volume.
    Measurement method

    Terms

    Air Permeability Tester

    Standards

    Active GB/T 9973-2025
    Test methods for permeability of carbon materials
    Active GB/T 22901-2008
    Paper and board - Determination of air permeance(medium range) - General method
    Active GB/T 458-2008
    Paper and board - Determination of air permeance

    Articles

    What is the difference between the Bendtsen method and the Gurley method for measuring paper air permeability using an air permeability tester?
    The air permeability of paper is a key indicator for evaluating its structural compactness and suitability, especially crucial in fields such as packaging, filtration, and specialty papers. The Bendtsen and Gurley methods are two classic and widely used techniques for determining paper permeability.