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ISO
ISO 9932:2021

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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General Information

Status : Active

Standard Type : Main

Document No : ISO 9932:2021

Document Year : 2021

Pages : 10

Edition : 2

Section Volume : Test methods and quality specifications for paper and board (ISO/TC 6/SC 2.)

ICS : Paper and board (85.060)

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.

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