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ASTM E398 PDF
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Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement
| Published by | Publication Date | Number of Pages |
| ASTM | 06/01/2020 | 5 |
ASTM E398 – Standard Test Method forWater Vapor Transmission Rate of Sheet Materials Using DynamicRelative Humidity Measurement
1.1 This test method covers dynamic evaluation of the rate of transfer of water vapor through a flexible barrier material and allows conversion to the generally recognized units of water vapor transmission (WVT) as obtained by various other test methods including the gravimetric method described in Test Methods E96/E96M.
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