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Full Description

1.1 These test methods cover the determination of water vapor transmission rate (WVTR) of materials, such as, but not limited to, paper, plastic films, other sheet materials, coatings, foams, fiberboards, gypsum and plaster products, wood products, and plastics. Two basic methods, the Desiccant Method and the Water Method, are provided for the measurement of WVTR. In these tests, the desired temperature and side-to-side humidity conditions, with resultant vapor drive through the specimen, are used. The test conditions employed are at the discretion of the user, but in all cases, are reported with the results.
1.2 The values stated in either Inch-Pound or SI units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other. Derived results are converted from one system to the other using appropriate conversion factors (see Table 1).
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
 

Document History

  1. ASTM E96/E96M-24

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    Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

    • Most Recent
  2. ASTM E96/E96M-23


    Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

    • Historical Version
  3. ASTM E96/E96M-22ae1


    Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

    • Historical Version
  4. ASTM E96/E96M-22a


    Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

    • Historical Version
  5. ASTM E96/E96M-22


    Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

    • Historical Version
  6. ASTM E96/E96M-21


    Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials

    • Historical Version
  7. ASTM E96/E96M-16


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  8. ASTM E96/E96M-15


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  9. ASTM E96/E96M-14


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  10. ASTM E96/E96M-13


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  11. ASTM E96/E96M-12


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  12. ASTM E96/E96M-10


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  13. ASTM E96/E96M-05


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  14. ASTM E96-00e1


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version
  15. ASTM E96-00


    Standard Test Methods for Water Vapor Transmission of Materials

    • Historical Version