Water vapour transmission rate (WVTR), gravimetric test

Gravimetric determination of WVTR. We recommend the measurement by hydrolysis method acc. ISO 15106-3 (hist DIN 53122-2). If you have any questions, please do not hesitate to contact us.

In short — AI-generated

The gravimetric test measures how much water vapor passes through a packaging material over a specific period. A test specimen is sealed over a cup containing a desiccant or water, and the weight change is recorded over time to determine the transmission rate.

The resulting value indicates the moisture barrier property of the packaging film. This data helps developers select materials that ensure product shelf life by preventing moisture from entering or escaping the package.

Text is AI-generated; based on test method data curated and verified by Innoform.

Test Method Group: permeation

Norms:

DIN 53122-1 (2001-08, accredited, Flex B) Testing of plastic and elastomer films, paper, board and other sheet materials – Determination of water vapour transmission – Part 1: Gravimetric method
ASTM E 96 (2022, accredited, Flex B) Water Vapor Transmission of Materials
DIN EN ISO 12572 (2025-03, accredited, Flex B) Hygrothermal performance of building materials and products – Determination of water vapour transmission properties – Cup method

Required Sample Amount: optimum: 5 DIN A 4 sheets without folds, creases or other damages

Standard Tests

WVTR gravimetric method 23°C/ 85 % rel. humidity

Specific Norm: DIN 53122-1

Test programm standard "europe"

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WVTR gravimetric method 38°C/ 90 % rel. humidity

Specific Norm: DIN 53122 T1

Testing programm standard "tropical climate/ Asia/ USA"

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