ISO 5637:2024
(Main)Paper and board — Determination of water absorption after immersion in water
Paper and board — Determination of water absorption after immersion in water
This document specifies a method for the determination of the water absorption of paper and board after total immersion in water for a specified time. The method is applicable to all types of paper and board which have a degree of water resistance. It is not applicable to very absorbent papers such as tissue papers and tissue products.
Papier et carton — Détermination de l'absorption d'eau après immersion dans l'eau
General Information
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Standards Content (Sample)
International
Standard
ISO 5637
Third edition
Paper and board — Determination
2024-10
of water absorption after
immersion in water
Papier et carton — Détermination de l'absorption d'eau après
immersion dans l'eau
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus, reagents and materials . 1
6 Sampling . 3
7 Test pieces . 4
7.1 Preparation .4
7.2 Conditioning.4
8 Procedure . 4
8.1 Preparation .4
8.2 Immersion time .4
8.3 Immersion of the test piece .4
8.4 Excess water removal . .5
8.5 Mass determination .5
9 Calculation of results . 6
9.1 General .6
9.2 Individual water absorption.6
9.3 Average water absorption .6
9.4 Relative water absorption .6
10 Test report . 6
Annex A (informative) Examples for support systems . 8
iii
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
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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 document 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).
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rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
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This document was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 2,
Test methods and quality specifications for paper and board.
This third edition cancels and replaces the second edition (ISO 5637:1989), which has been technically
revised.
The main changes are as follows:
— Clause 2 Normative references has been updated;
— Former Clause 5 Reagent and Clause 6 Apparatus incorporated into new Clause 5 Apparatus, reagents
and materials and revised;
— Clause 6 Sampling is revised;
— Clause 8 Procedure has been revised, especially immersion time and excess water removal;
— 8.5 "mass determination" has been added;
— Former Clause 9 Expression of results has been updated and the average water absorption has been added;
— Clause 11 Test report has been revised;
— Annex A with examples of possible support systems has been added;
— editorially revised.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
International Standard ISO 5637:2024(en)
Paper and board — Determination of water absorption after
immersion in water
1 Scope
This document specifies a method for the determination of the water absorption of paper and board after
total immersion in water for a specified time.
The method is applicable to all types of paper and board which have a degree of water resistance. It is not
applicable to very absorbent papers such as tissue papers and tissue products.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 186, Paper and board — Sampling to determine average quality
ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for
monitoring the atmosphere and conditioning of samples
ISO 14487, Pulps — Standard water for physical testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
water absorption
mass of water absorbed per unit area under the specified cond
...
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