prEN ISO 12625-8

SLOVENSKI STANDARD
01-julij-2026
Tissue higienski papir in proizvodi iz tissue papirja - 8. del: Čas vpijanja vode in
sposobnost vpijanja vode, preskusna metoda s potopitvijo košarice (ISO/DIS
12625-8:2026)
Tissue paper and tissue products - Part 8: Water-absorption time and water-absorption
capacity, basket-immersion test method (ISO/DIS 12625-8:2026)
Tissue-Papier und Tissue-Produkte - Teil 8: Zeit für die Wasseraufnahme und
Wasseraufnahmekapazität, Korbeintauch-Prüfverfahren (ISO/DIS 12625-8:2026)
Papier tissue et produits tissues - Partie 8: Temps d'absorption d'eau et capacité
d'absorption d'eau, méthode d'essai d'immersion au panier (ISO/DIS 12625-8:2026)
Ta slovenski standard je istoveten z: prEN ISO 12625-8
ICS:
85.080.20 Tissue papir Tissue paper
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 12625-8
ISO/TC 6/SC 2
Tissue paper and tissue products —
Secretariat: SIS
Part 8:
Voting begins on:
Water-absorption time and water- 2026-06-05
absorption capacity, basket-
Voting terminates on:
2026-08-28
immersion test method
Papier tissue et produits tissues —
Partie 8: Temps d'absorption d'eau et capacité d'absorption
d'eau, méthode d'essai d'immersion au panier
ICS: 85.080.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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NATIONAL REGULATIONS.
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NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 12625-8:2026(en)
DRAFT
ISO/DIS 12625-8:2026(en)
International
Standard
ISO/DIS 12625-8
ISO/TC 6/SC 2
Tissue paper and tissue products —
Secretariat: SIS
Part 8:
Voting begins on:
Water-absorption time and water-
absorption capacity, basket-
Voting terminates on:
immersion test method
Papier tissue et produits tissues —
Partie 8: Temps d'absorption d'eau et capacité d'absorption
d'eau, méthode d'essai d'immersion au panier
ICS: 85.080.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
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WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 12625-8:2026(en)
ii
ISO/DIS 12625-8:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagent . 2
6 Preparation and conditioning of the test pieces . 2
6.1 Sampling .2
6.2 Conditioning.2
6.3 Preparation of test pieces .2
7 Manual test method . 2
7.1 Apparatus .2
7.2 Procedure .3
8 Automated test method . 4
8.1 Apparatus .4
8.1.1 General .4
8.2 Requirements .5
8.3 Procedure .6
9 Calculation and expression of results . 6
9.1 Water-absorption time .6
9.2 Water-absorption capacity .6
10 Test report . 7
Annex A (informative) Precision . 8
Bibliography .12

iii
ISO/DIS 12625-8:2026(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
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 12625-8:2010) which has been technically
revised.
The main changes are as follows:
— Addition of automated testing method options, besides the manual testing approach;
— Rearrangements of different parts in 7.1;
— Addition of instruments in 7.2 and Annex A;
— Addition of 8.2 and addition of 8.2.5;
— Editing of the text.
A list of all parts in the ISO 12625 series can be found on the ISO website.
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
ISO/DIS 12625-8:2026(en)
Introduction
This part of ISO 12625 describes a principle for the determination of water-absorption properties of tissue
paper and tissue products, a principle in which sheets of the sample are inserted in a cylindrical basket,
which is immersed in water. The results are expressed as
— water-absorption time, and
— water-absorption capacity.
In European and international trade, both water-absorption time and water-absorption capacity represent
important parameters in the field of comparison of tissue products.

v
DRAFT International Standard ISO/DIS 12625-8:2026(en)
Tissue paper and tissue products —
Part 8:
Water-absorption time and water-absorption capacity,
basket-immersion test method
1 Scope
This part of ISO 12625 specifies a basket-immersion test method for the determination of water-absorption
time and water-absorption capacity of tissue paper and tissue products.
It is expressly stated that the detection of impurities and contraries in tissue paper and tissue products be
[1]
applied according to ISO 15755 .
[2]
For the determination of moisture content in tissue paper and tissue products, ISO 287 is applicable.
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
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 http:// www .electropedia .org/
3.1
absorption time
time required for complete wetting of a sample
3.2
water-absorption capacity
mass of water that is absorbed per unit mass of the test piece under specified conditions
4 Principle
A test piece of the tissue paper or a tissue product is placed in a cylindrical basket and allowed to immerse
in water under its own weight.
The time required for complete wetting of the test piece is measured, the mass of water absorbed then being
determined after a stated immersion time followed by a given draining time, under specified conditions.

ISO/DIS 12625-8:2026(en)
5 Reagent
5.1 Deionized water, with a conductivity ≤0,25 mS/m at 25 °C, in accordance with ISO 14487. The water
temperature should be maintained during the test at the temperature used for conditioning and testing. To
avoid interference due to contamination of the water from previous test pieces, change the water after each
series of tests. If temperature is different from 23 °C (+/- 1 °C), then water temperature shall be included in
the test report.
6 Preparation and conditioning of the test pieces
6.1 Sampling
If the tests are being made to evaluate a lot, select the sample in accordance with ISO 186. When sampling
finished roll products, eliminate at least the first six layers and the last six layers because of the possible
presence of adhesive or mechanical damage.
If the tests are made on another type of sample, make sure that the test pieces taken are representative of
the sample received.
6.2 Conditioning
Condition the test pieces in accordance with ISO 187, prepare and test the pieces under the same condition.
6.3 Preparation of test pieces
From the sample, prepare five test pieces by cutting test pieces of (76 ± 1) mm w
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