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See Chinese contents: GB/T 1037-2021 GB/T 1037-2021: Test method for water vapor transmission of plastic film and sheet -- Desiccant method and water method
This document specifies two cup methods for determining the water vapor transmission properties of plastic films and sheets ¨C the desiccant method and the water method. This document is applicable to the determination of water vapor transmission properties of plastic films and sheets. This document can be used as a reference to the determinations of the water vapor transmission properties of paper, non-woven fabrics, artificial leather, and other materials.
