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ASTM E2945 PDF
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Standard Test Method for Film Permeability Determination Using Static Permeability Cells
| Published by | Publication Date | Number of Pages |
| ASTM | 04/01/2021 | 12 |
ASTM E2945 – Standard Test Method for Film Permeability Determination Using Static Permeability Cells
1.1”This test method covers the measurement of the transmission of a gas through plastic membranes, sheeting, films, and fabric materials using a static sealed diffusion chamber. The test method monitors gas diffusion across a film membrane and provides measurements of (1) gas concentrations on each side of the film membrane and (2) estimates of the mass transfer coefficient (MTC) for the tested gas and film material. The MTC represents the film permeability and is independent of the concentration gradient used during testing, which simplifies some aspects of the experimental design.
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