ISO 15106-5:2015

INTERNATIONAL ISO
STANDARD 15106-5
First edition
2015-04-15
Plastics — Film and sheeting —
Determination of water vapour
transmission rate —
Part 5:
Pressure sensor method
Plastiques — Film et feuille — Détermination du coefficient de
transmission de vapeur d’eau —
Partie 5: Méthode en pression différentielle
Reference number
©
ISO 2015
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Terms and definitions . 1
3 Principle . 1
4 Test specimens. 1
5 Conditioning . 1
6 Apparatus . 2
6.1 General . 2
6.2 Transmission cell . 2
6.3 Pressure sensor . 2
6.4 Water vapour generator . 2
6.5 Cell volume-control device . 2
6.6 Water . 2
6.7 Vacuum pump . 2
7 Test conditions . 3
8 Procedure. 4
9 Background measurement . 4
10 Calculation . 5
11 Test result . 5
12 Precision . 5
13 Test report . 5
Bibliography . 7
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.
ISO 15106 consists of the following parts, under the general title Plastics — Film and sheeting ―
Determination of water vapour transmission rate:
— Part 1: Humidity detection sensor method
— Part 2: Infrared detection sensor method
— Part 3: Electrolytic detection sensor method
— Part 4: Gas-chromatographic detection sensor method
— Part 5: Pressure sensor method
— Part 6: Atmospheric pressure ionization mass spectrometer method
— Part 7: Calcium corrosion method
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 15106-5:2015(E)
Plastics — Film and sheeting — Determination of water
vapour transmission rate —
Part 5:
Pressure sensor method
1 Scope
This part of ISO 15106 specifies a method for determining the water vapour transmission rate of plastic
film, plastic sheeting, and multi-layer structures including plastics, using a pressure sensor.
NOTE The method provides rapid measurement over a wide range of water vapour transmission rates.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
water vapour transmission rate
amount of water vapour transmitted through unit area of test specimen per unit time under specified
conditions
Note 1 to entry: Water vapour transmission rate is expressed in grams per square metre per 24 h [g
...