BS ISO 9932:2021
$102.76
Paper and board. Determination of water vapour transmission rate of sheet materials. Dynamic sweep and static gas methods
Published By | Publication Date | Number of Pages |
BSI | 2021 | 20 |
This document describes general test methods for determining the water vapour transmission rate of sheet materials by means of a dynamic gas method or a static gas method. Depending on the method and specific apparatus employed, materials up to 38 mm thick and with water vapour transmission rates in the range from 0,05 g/(m2·d) to 65 g/(m2·d) can be tested. The basis of the function of the instrumental techniques is briefly described. Advice on calibration is given in Annex B.
PDF Catalog
PDF Pages | PDF Title |
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2 | National foreword |
6 | Foreword |
7 | Introduction |
9 | 1 Scope 2 Normative references 3 Terms and definitions 4 Method A: Dynamic sweep gas method 4.1 Principle |
10 | 4.2 Apparatus |
11 | 5 Method B: Static gas method 5.1 Principle 5.2 Apparatus |
12 | 6 Sampling |
13 | 7 Preparation of test pieces 8 Procedure 8.1 Method A 8.2 Method B 8.3 Barrier material having one face of uncoated paper |
14 | 8.4 Creased material 9 Expression of results 10 Precision 10.1 General statement of the precision 10.2 Method A 10.3 Method B 11 Test report |
15 | Annex A (normative) Saturated saline solutions |
16 | Annex B (normative) Calibration |
17 | Annex C (informative) Comparison of dynamic method with gravimetric method |
18 | Bibliography |