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BS ISO 1663:2023

BS ISO 1663:2023

$142.49

Rigid cellular plastics. Determination of water vapour transmission properties

Published By Publication Date Number of Pages
BSI 2023 24
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PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Apparatus and materials
9 6 Sample
10 7 Test specimens
7.1 Dimensions
7.1.1 Shape and fit
7.1.2 Thickness
11 7.1.3 Exposed area
7.2 Number
7.3 Conditioning
8 Procedure
13 9 Expression of results
9.1 Calculation of constant rate of change of mass
9.1.2 Blank specimen
9.2 Calculation of water vapour transmission rate
9.3 Uncorrected calculation of water vapour transmission rate
14 9.4 Calculation of water vapour permeability
9.5 Calculation of water vapour diffusion resistance index
15 10 Precision
11 Test report
17 Annex A (normative) Preparation of test assemblies
19 Annex B (informative) Derivation of the formula for calculating the water vapour diffusion resistance index
22 Bibliography

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BS ISO 1663:2023
$142.49