EN ISO 12625-8:2006

SLOVENSKI STANDARD
01-maj-2006
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Tissue paper and tissue products - Part 8: Water-absorption time and water-absorption
capacity, basket- immersion test method (ISO 12625-8:2006)
Tissue-Papier und Tissue-Produkte - Teil 8: Zeit für die Wasseraufnahme und
Wasseraufnahmekapazität, Korbeintauch-Prüfverfahren (ISO 12625-8:2006)
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 12625-8:2006)
Ta slovenski standard je istoveten z: EN ISO 12625-8:2006
ICS:
85.080.20 Tissue papir Tissue paper
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 12625-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2006
ICS 85.060
English Version
Tissue paper and tissue products - Part 8: Water-absorption
time and water-absorption capacity, basket- immersion test
method (ISO 12625-8:2006)
Papier tissue et produits tissues - Partie 8: Temps Tissue-Papier und Tissue-Produkte - Teil 8: Zeit für die
d'absorption d'eau et capacité d'absorption d'eau, méthode Wasseraufnahme und Wasseraufnahmekapazität,
d'essai d'immersion au panier (ISO 12625-8:2006) Korbeintauch-Prüfverfahren (ISO 12625-8:2006)
This European Standard was approved by CEN on 14 March 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12625-8:2006: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 12625-8:2006) has been prepared by Technical Committee CEN/TC
172 "Pulp, paper and board", the secretariat of which is held by DIN, in collaboration with
Technical Committee ISO/TC 6 "Paper, board and pulps".

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by September 2006, and conflicting national
standards shall be withdrawn at the latest by September 2006.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

INTERNATIONAL ISO
STANDARD 12625-8
First edition
2006-03-15
Tissue paper and tissue products —
Part 8:
Water-absorption time and water-
absorption capacity, basket-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

Reference number
ISO 12625-8:2006(E)
©
ISO 2006
ISO 12625-8:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 12625-8:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle. 2
5 Reagent. 2
6 Preparation and conditioning of the test pieces . 2
7 Manual test method . 2
8 Automated test method. 4
9 Calculation and expression of results. 5
10 Test report . 6
11 Precision. 6
Bibliography . 8

ISO 12625-8:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12625-8 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 172, Pulp, paper and board, in collaboration with Technical Committee ISO/TC 6, Paper, board and
pulps, Subcommittee 2, Test methods and quality specifications for paper and board, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This first edition cancels and replaces ENV 12625-8:2001, which has been technically revised.
With regard to ENV 12625-8:2001, the following changes have been made:
a) the description of the preparation and conditioning of the test pieces was formulated more precisely;
b) the instruction for the manual test method procedure, as well as for the automated test method procedure,
were described more precisely;
c) figures for the precision of both test methods were added;
d) editorial updating;
e) change of the status from ENV to ISO.
ISO 12625 consists of the following parts, under the general title Tissue paper and tissue products:
⎯ Part 1: General guidance on terms
⎯ Part 3: Determination of thickness, bulking thickness and apparent bulk density
⎯ Part 4: Determination of tensile strength, stretch at break and tensile energy absorption
⎯ Part 5: Determination of wet tensile strength
⎯ Part 6: Determination of grammage
⎯ Part 7: Determination of optical properties
⎯ Part 8: Water-absorption time and water-absorption capacity, basket-immersion test method
⎯ Part 9: Determination of ball burst strength
iv © ISO 2006 – All rights reserved

ISO 12625-8:2006(E)
Introduction
This part of ISO 12625 describes one principle for 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;
⎯ water-absorption capacity.
In European and International trade, both water-absorption time and water-absorption capacity represent
important parameters required in the field of comparison of tissue products.

INTERNATIONAL STANDARD ISO 12625-8:2006(E)

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 basket-immersion test methods (one manual and one automated) for the
determination of water-absorption time and water-absorption capacity of absorbent tissue paper and tissue
products.
It is expressly stated that the detection of impurities and contraries in tissue paper and tissue products should
be applied according to ISO 15755.
For the determination of moisture content in tissue paper and tissue products, ISO 287 should be applied.
2 Normative references
The following referenced documents are indispensable for the application 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.
3.1
water-absorption time
time required for complete wetting of a test piece after the start of water immersion
3.2
water-absorption capacity
mass of water that is absorbed per unit mass of the test piece under specified conditions
ISO 12625-8:2006(E)
4 Principle
A test piece of the tissue paper or the 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.
5 Reagent
5.1 De-ionized water, with a conductivity of 0,25 mS/m in accordance with ISO 14487, and a temperature
of (23 ± 1)° C in accordance with ISO 187.
To avoid interference due to contamination of the water from previous test pieces, change the water after
each series.
6 Preparation and conditioning of the test pieces
6.1 Sampling
The sample shall be selected 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.
6.2 Preparation of test pieces
From the sample, prepare five test pieces by cutting test piec
...