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Standards Governing Gas Permeability Test Explained
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Standards Governing Gas Permeability Test Explained

Standards Governing Gas Permeability Test Explained
1 /2Pages

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Standards Governing Gas Permeability Test Explained-1

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Standards Governing Gas Permeability Test Explained Gas permeability is a critical property for various materials, influencing applications ranging from food packaging to medical devices. Accurate and consistent measurement of this property is essential. International and domestic standards governing gas permeability testing show inconsistencies which may lead to confusion when interpreting data and comparing results across different studies. Labthink C130H Gas Permeability Tester is based on manometric method and conforms to ASTM D1434, while C206H Oxygen Transmission Rate Test System is based on the coulometric sensor method and conforms to ASTM D3985 Two primary methods are employed for gas permeability measurement: the manometric method and the equal pressure method. Each method utilizes a specific terminology for related concepts. Here's a breakdown of the key parameters: Gas Transmission Rate (GTR): This reflects the volume of gas permeating a material unit area per unit time. While seemingly simple, GTR is highly dependent on test conditions, particularly the pressure differential between the material's two sides. This dependence makes GTR less suitable for data comparison across studies. Permeance: This parameter represents a material's inherent property, independent of test conditions. It quantifies the ease with which gas flows through the material under a specific pressure difference. Permeance is generally considered the most valuable parameter for material comparison. Permeability Coefficient: This combines permeance with the material's thickness, providing a property specific to the material itself. 1

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Standards Governing Gas Permeability Test Explained-2

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 The following table summarizes the terminology variations between standards for the manometric and equal pressure methods: The key takeaway is that permeance offers the most reliable parameter for material comparison due to its independence from test conditions. Gas transmission rate, while seemingly straightforward, can be misleading due to its dependence on pressure differentials. Additionally, the report emphasizes that GTR may not be suitable for all materials, particularly those with multilayers. Understanding the variations...

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All Labthink Instruments Co., Ltd. catalogs and technical brochures

  1. C610M

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  2. C690H

    4  Pages

  3. C130H

    4  Pages

  4. COF-P01

    2  Pages

  5. VAC-V2

    3  Pages

  6. C230H (2025)

    4  Pages

  7. C610H

    3  Pages

  8. C206H

    4  Pages

  9. C406H

    5  Pages

  10. C403H

    5  Pages

  11. C 681M

    1  Page

  12. C660B (2025)

    3  Pages

  13. C632M

    3  Pages

  14. C630H

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  15. C620H

    3  Pages

  16. C 640

    4  Pages

  17. C 660M

    3  Pages

  18. C306H (2025)

    4  Pages

  19. C203H

    4  Pages

  20. BTY-B3P

    2  Pages

  21. C360M

    4  Pages

  22. C632B

    3  Pages

  23. C190H

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  24. C390H

    4  Pages

  25. C360H

    4  Pages

  26. C660M

    3  Pages

  27. C303H

    4  Pages

  28. C106H

    5  Pages

  29. C640

    4  Pages

  30. MXD-02

    2  Pages

  31. CHY-C2A

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  32. C611B

    2  Pages

  33. CH130

    4  Pages

  34. C 631 H

    2  Pages

  35. C660 B

    3  Pages

  36. VAC-VBS

    3  Pages

  37. XYD-15K

    2  Pages

  38. C360

    4  Pages

  39. C631 H

    2  Pages

  40. FST-02

    2  Pages

  41. C681 M

    2  Pages

  42. C230

    4  Pages

  43. C631H

    2  Pages

  44. C612M

    3  Pages

  45. SLY-SI

    2  Pages

  46. C360 M

    4  Pages

  47. C611M

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  48. C330H

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  49. Leak Tester

    3  Pages

  50. Tensile Testers

    19  Pages

  51. FDI-01

    5  Pages

  52. DIN 75201

    2  Pages

  53. Abrasion Test

    2  Pages

  54. Torque Meter

    2  Pages

  55. Leak Detector

    2  Pages

  56. Torque tester

    2  Pages

  57. Impact tester

    2  Pages

  58. Gas Analyzer

    2  Pages

  59. TOQUE TESTER

    1  Page

Archived catalogs

  1. C611M

    2  Pages

  2. C306H

    3  Pages

  3. C230H

    4  Pages

  4. Leak Tester

    2  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.