BS ISO 2528:2017
$142.49
Sheet materials. Determination of water vapour transmission rate (WVTR). Gravimetric (dish) method
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 24 |
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 1 g/m2 per day or for materials thicker than 3 mm. In such cases the method specified in ISO 9932 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 Annex A.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Principle 5 Apparatus and material |
| 13 | 6 Sampling 7 Conditioning 8 Preparation of test pieces |
| 14 | 9 Preparation of dishes 9.1 General 9.2 Use of wax and a cover template [5.3 b)] 9.3 Use of wax and a ring template [5.3 a)] 10 Procedure 10.1 General method |
| 15 | 10.2 Use of blank assemblies 10.3 Creased sheet 11 Expression of results |
| 16 | 12 Precision 13 Test report |
| 17 | Annex A (normative) Method for determination of water vapour transmission rate of creased materials |
| 21 | Annex B (normative) Test conditions |
| 22 | Annex C (informative) Sealing waxes |
| 23 | Bibliography |
