ISO 15106-6:2015
(Main)Plastics — Film and sheeting — Determination of water vapour transmission rate — Part 6: Atmospheric pressure ionization mass spectrometer method
Plastics — Film and sheeting — Determination of water vapour transmission rate — Part 6: Atmospheric pressure ionization mass spectrometer method
ISO 15106-6:2015 specifies a method for determining the water vapour transmission rate of plastic film, plastic sheeting, and multi-layer structures including plastics, using an atmospheric pressure ionization mass spectrometric detection sensor.
Plastiques — Film et feuille — Détermination du coefficient de transmission de vapeur d'eau — Partie 6: Méthode utilisant un spectromètre de masse à ionisation sous pression atmosphérique
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 15106-6
First edition
2015-04-15
Plastics — Film and sheeting —
Determination of water vapour
transmission rate —
Part 6:
Atmospheric pressure ionization mass
spectrometer method
Plastiques — Film et feuille — Détermination du coefficient de
transmission de vapeur d’eau —
Partie 6: Méthode utilisant un spectromètre de masse à ionisation
sous pression atmosphérique
Reference number
ISO 15106-6:2015(E)
©
ISO 2015
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ISO 15106-6:2015(E)
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ii © ISO 2015 – All rights reserved
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ISO 15106-6:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Test specimens. 2
6 Conditioning . 2
7 Apparatus . 2
8 Test condition . 3
9 Calibration graph . 4
10 Procedure. 5
11 Calculation . 6
12 Test result . 6
13 Precision . 6
14 Test report . 6
Bibliography . 8
© ISO 2015 – All rights reserved iii
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ISO 15106-6:2015(E)
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
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INTERNATIONAL STANDARD ISO 15106-6:2015(E)
Plastics — Film and sheeting — Determination of water
vapour transmission rate —
Part 6:
Atmospheric pressure ionization mass spectrometer 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 an atmospheric pressure
ionization mass spectrometric detection sensor.
NOTE The method provides rapid measurement over a wide range of water vapour transmission rates.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 6145-8, Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods —
Part 8: Diffusion method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
water vapour transmission rate
amount of water vapour transmitted through unit area of test specimen per unit time under specified
conditions
2
Note 1 to entry: Water vapour transmission rate is expressed in grams per square metre per 24 h [g/(m ∙24 h)].
4 Principle
The gas transmission cell is designed in such a way that, with the test specimen inserted, it is divided
into a dry chamber and a wet chamber. The dry side of the specimen is swept by a flow of dry carrier gas
such as nitrogen or argon, and water vapour permeating through the specimen from the wet chamber
is carried by the carrier gas into an atmospheric pressure ionization mass spectrometer. This sensor
contains an ion formation region near atmospheric pressure and a mass analysis region in ultra-high
vacuum. The carrier gas with the moisture is introduced into the ion formation region where the carrier
gas is ionized as primary ions by corona discharge ion sources, and then, an ion-molecule reaction is
produced between the primary ions and water molecules contained in the carrier gas and the water
molecules are ionized. These ionized water molecules are fed to the mass analysis region. Water vapour
content in the range between ppt and ppb in the carrier gas can be detected as an ion intensity of mass
+ + +
number (m/z) of ion species, such as H O at m/z 18, H O at m/z 19, and H (H O) at m/z 37. These are
2 3 2 2
produced by ionization of water in the ion source and determined using a calibration curve. The mass
of th
...
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