BS 7406:1991

$86.31

Methods for determination of water vapour transmission rate of sheet materials (paper and board) by dynamic sweep and static gas methods

Published By	Publication Date	Number of Pages
BSI	1991	14

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Description

This International Standard 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 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.

Can measure WVTR’s as low as 0.05 g/(m².d) and be used on materials up to 38 mm thick.

Additional information

Status	Withdrawn
Title	Methods for determination of water vapour transmission rate of sheet materials (paper and board) by dynamic sweep and static gas methods
Publisher	BSI
Committee	PAI/11
Pages	14
Publication Date	1991-01-31
Withdrawn Date	2021-03-03
Replaced By	BS ISO 9932:2021
ISBN	0 580 19317 9
Standard Number	BS 7406:1991, ISO 9932:1990
Identical National Standard Of	ISO 9932:1990
Descriptors	Calibration, Specimen preparation, Permeability measurement, Board (paper), Test equipment, Sheet materials, Watertightness tests, Penetration tests, Reproducibility, Leak tests, Paper, Water-vapour tests, Testing conditions, Paper products
ICS Codes	85.060 - Paper and board

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BS 7406:1991

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