BS ISO 2528:2017
Current
The latest, up-to-date edition.
Sheet materials. Determination of water vapour transmission rate (WVTR). Gravimetric (dish) method
Hardcopy , PDF
English
20-10-2017
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus and material
6 Sampling
7 Conditioning
8 Preparation of test pieces
9 Preparation of dishes
10 Procedure
11 Expression of results
12 Precision
13 Test report
Annex A (normative) - Method for determination of
water vapour transmission rate of creased
materials
Annex B (normative) - Test conditions
Annex C (informative) - Sealing waxes
Bibliography
Describes a method for the determination of the water vapour transmission rate (often erroneously called 'permeability') of sheet materials.
| Committee |
PAI/11
|
| DevelopmentNote |
Supersedes BS 2782-8.820A(1996). (10/2017)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This document specifies a method for the determination of the water vapour transmission rate (often erroneously called “permeability”) of sheet materials.
This method is not generally recommended for use if the transmission rate is expected to be less than 1g/m2perday or for materials thicker than 3mm. In such cases the method specified in ISO9932 is preferred.
The method cannot be applied to film materials that are damaged by hot wax or that shrink to an appreciable extent under the test conditions used.
For some purposes it may be necessary to determine the transmission rate of creased material; a procedure for this is given in AnnexA.
| Standards | Relationship |
| ISO 2528:2017 | Identical |
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