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BS ISO 9932:2021
Paper and board. Determination of water vapour transmission rate of sheet materials. Dynamic sweep and static gas methods
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| Označení normy: | BS ISO 9932:2021 |
| Počet stran: | 20 |
| Vydáno: | 2021-03-03 |
| ISBN: | 978 0 539 12559 7 |
| Status: | Standard |
DESCRIPTION
BS ISO 9932:2021
This standard BS ISO 9932:2021 Paper and board. Determination of water vapour transmission rate of sheet materials. Dynamic sweep and static gas methods is classified in these ICS categories:
- 85.060 Paper and board
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.