ISO 17190-4:2020

INTERNATIONAL ISO
STANDARD 17190-4
Second edition
2020-10
Urine-absorbing aids for
incontinence — Polyacrylate
superabsorbent powders —
Part 4:
Test method for estimation of the
moisture content as weight loss upon
heating
Aides pour absorption d'urine — Méthodes d'essai pour caractériser
les matériaux absorbants à base de polymères —
Partie 4: Détermination de la teneur en humidité au moyen de la
perte de masse par chauffage
Reference number
©
ISO 2020
© ISO 2020
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Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reagents and materials . 2
6 Apparatus . 2
7 Conditioning . 2
8 Sampling . 2
9 Procedure. 3
10 Calculation . 4
11 Report . 4
12 Precision . 4
Bibliography . 6
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
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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
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on the ISO list of patent declarations received (see www .iso .org/ patents).
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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 173, Assistive products, Subcommittee
SC 3, Aids for ostomy and incontinence.
This second edition cancels and replaces the first edition (ISO 17190-4:2001), which has been technically
revised. The main changes compared to the previous edition are as follows:
— full text review and new laboratory analysis with statistical evaluation.
A list of all parts in the ISO 17190 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 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 17190-4:2020(E)
Urine-absorbing aids for incontinence — Polyacrylate
superabsorbent powders —
Part 4:
Test method for estimation of the moisture content as
weight loss upon heating
WARNING — This document does not claim to address all of the safety concerns, if any, associated
with its use. It is the responsibility of the user of this document to establish appropriate safety
and health practices and determine the applicability of regulatory limitations prior to use. It
is expected that the person performing this test has been fully trained in all aspects of this
procedure.
1 Scope
This document provides a test method for the evaluation of mass loss upon heating for cross-linked
polyacrylate superabsorbent powders.
This method is applicable to powdered polymeric superabsorbent materials that are free-flowing under
the specified test conditions. Substances other than water that are volatile in this temperature range
will interfere. The onus is on the polymer formulator/producer to decide if such interference is possible
and either exclude the method from use, provide an alternative or modify the method accordingly.
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 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 terminological databases for use in standardization at the following addresses:
— ISO
...