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What is water vapor permeability?

Water vapor permeability is a measure of the passage of water vapor through a membrane.

Water vapor permeability is a measure of the passage of water vapor through a membrane. It is the rate of water vapor transmission per unit area per unit of vapor pressure differential under test conditions.

The higher the value of the permeability of the material, the more rapidly vapour can pass through it. Vapour permeability is the rate at which vapour passes through a material.

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Posted in Product Knowledge on Aug 20, 2020.
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