Leather — Chemical tests — Determination of pH and difference figure

This document specifies a method for determining the pH value and the difference figure of an aqueous leather extract. It is applicable to all types of leather.

Cuir — Essais chimiques — Détermination du pH et de l'indice de différence

Le présent document spécifie une méthode de détermination de la valeur du pH et de l'indice de différence d'un extrait aqueux de cuir. Il est applicable à tous les types de cuir.

General Information

Status
Published
Publication Date
07-May-2018
Current Stage
9093 - International Standard confirmed
Start Date
26-Mar-2025
Completion Date
14-Feb-2026

Relations

Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
09-Feb-2026
Effective Date
12-Feb-2026
Effective Date
06-Jun-2022
Effective Date
06-May-2017

Overview

ISO 4045:2018 - Leather - Chemical tests - Determination of pH and difference figure, is an international standard developed by the International Organization for Standardization (ISO) for assessing the pH and the difference figure of aqueous extracts from leather materials. This standard is applicable to all types of leather and provides a uniform procedure for testing, helping manufacturers, laboratories, and regulatory bodies ensure quality, safety, and compliance in the leather industry.

ISO 4045:2018 is instrumental in identifying the presence of strong acids or bases in leather, enabling better control of chemical processes during leather production and ensuring the suitability of leather goods for end-use applications.

Key Topics

  • pH Measurement: Standardized protocol for preparing an aqueous extract of leather and measuring its pH value using a calibrated pH meter. This helps determine the acidity or alkalinity, a crucial indicator of the leather's chemical condition.
  • Difference Figure: Calculation of the difference between the pH of the original extract and its tenfold dilution. The difference figure provides insight into the presence of free strong acids or bases, essential for leather quality assurance.
  • Sample Preparation: Guidelines for sampling according to ISO 2418 and preparation protocols in line with ISO 4044, ensuring repeatable and comparable results.
  • Reporting: Requirements for documenting test results, including details of the sample, pH values, difference figures, and any deviations from the standard method.

Applications

ISO 4045:2018 is widely used across the leather industry for quality control, safety assessment, and compliance with international regulations. Key applications include:

  • Leather Manufacturing: Assessing the chemical stability of tanned leather and finished leather goods to reduce the risk of product degradation or customer complaints.
  • Product Safety: Ensuring that pH levels fall within acceptable ranges to prevent skin irritation, allergic reactions, or damage to articles made from leather.
  • Compliance and Certification: Supporting manufacturers and exporters in meeting global standards for leather products, facilitating market access and trade.
  • Material Research and Development: Providing data for the development of new leather treatments and finishes, ensuring chemical compatibility and performance.
  • Third-Party Testing Laboratories: Enabling independent verification of leather pH for regulatory, import/export, and procurement purposes.

Related Standards

To achieve comprehensive quality assurance and testing in the leather industry, ISO 4045:2018 should be used in conjunction with several related standards:

  • ISO 2418: Leather - Chemical, physical, mechanical and fastness tests - Sampling location. Guides on correct sample selection for representativeness.
  • ISO 3696: Water for analytical laboratory use - Specification and test methods. Specifies the water quality required for accurate chemical testing.
  • ISO 4044: Leather - Chemical tests - Preparation of chemical test samples. Outlines procedures for consistent test sample preparation.

By following ISO 4045:2018 and the associated standards, organizations can ensure robust chemical testing, reliable results, and the production of safe, high-quality leather products suitable for diverse end uses.

Keywords: ISO 4045:2018, leather pH testing, difference figure, chemical tests for leather, leather quality control, leather standards, IULTCS/IUC 11, leather industry compliance, aqueous leather extract, product safety.

Buy Documents

Standard

ISO 4045:2018 - Leather -- Chemical tests -- Determination of pH and difference figure

English language (3 pages)
sale 15% off
Preview
sale 15% off
Preview
Standard

REDLINE ISO 4045:2018 - Leather — Chemical tests — Determination of pH and difference figure Released:5/8/2018

English language (3 pages)
sale 15% off
Preview
sale 15% off
Preview
Standard

ISO 4045:2018 - Leather — Chemical tests — Determination of pH and difference figure/8/2018

Release Date:08-May-2018
English language (3 pages)
sale 15% off
Preview
sale 15% off
Preview
Standard

ISO 4045:2018 - Cuir -- Essais chimiques -- Détermination du pH et de l'indice de différence

French language (3 pages)
sale 15% off
Preview
sale 15% off
Preview
Standard

ISO 4045:2018 - Cuir — Essais chimiques — Détermination du pH et de l'indice de différence/8/2018

Release Date:08-May-2018
French language (3 pages)
sale 15% off
Preview
sale 15% off
Preview

Get Certified

Connect with accredited certification bodies for this standard

Control Union Certifications

Global certification for agriculture and sustainability.

RVA Netherlands Verified

Hohenstein Institut

Textile testing and certification.

DAKKS Germany Verified

Bureau Veritas Bangladesh

Bureau Veritas certification services in Bangladesh.

BAB Bangladesh Verified

Sponsored listings

Frequently Asked Questions

ISO 4045:2018 is a standard published by the International Organization for Standardization (ISO). Its full title is "Leather — Chemical tests — Determination of pH and difference figure". This standard covers: This document specifies a method for determining the pH value and the difference figure of an aqueous leather extract. It is applicable to all types of leather.

This document specifies a method for determining the pH value and the difference figure of an aqueous leather extract. It is applicable to all types of leather.

ISO 4045:2018 is classified under the following ICS (International Classification for Standards) categories: 59.140.30 - Leather and furs. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 4045:2018 has the following relationships with other standards: It is inter standard links to EN ISO 17700:2019, EN ISO 14931:2021, EN ISO 13688:2013, EN ISO 21420:2020, EN ISO 11640:2018, EN ISO 20344:2021, EN ISO 4045:2018, ISO 10494:2018, ISO 4045:2008. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 4045:2018 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 4045
IULTCS/IUC 11
Third edition
2018-05
Leather — Chemical tests —
Determination of pH and difference
figure
Cuir — Essais chimiques — Détermination du pH et de l'indice de
différence
Reference numbers
IULTCS/IUC 11:2018(E)
©
ISO 2018
IULTCS/IUC 11:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

IULTCS/IUC 11:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Sampling and preparation of the samples . 2
8 Procedure. 2
8.1 Preparation of the extract . 2
8.2 Calibration of the pH meter . 3
8.3 Determination of the pH value . 3
8.4 Determination of the difference figure. 3
9 Test report . 3
IULTCS/IUC 11:2018(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 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 the following
URL: www .iso .org/iso/foreword .html
This document was prepared by the Chemical Tests Commission of the International Union of Leather
Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of
which is held by UNI, in accordance with the agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
It is based on IUC 11 published in J. Soc. Leather Tech. Chem., 49, pp. 25–29, 1965, and declared an official
method of the IULTCS in 1965.
IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to
further the advancement of leather science and technology. IULTCS has three Commissions, which
are responsible for establishing international methods for the sampling and testing of leather. ISO
recognizes IULTCS as an international standardizing body for the preparation of test methods for
leather.
This third edition cancels and replaces the second edition (ISO 4045:2008), which has been technically
revised as follows:
— change in title to include “and difference figure”;
— 5.1 and 6.1 have been revised;
— Clause 7 has been revised: two samples are only prepared when there is enough leather;
— 8.1 has been revised to more clearl
...


INTERNATIONAL STANDARD
Deleted: /FDIS
ISO 4045
IULTCS/IUC 11
Third edition
Deleted: 2017–11–22¶
2018-05
Leather — Chemical tests — Determination of pH and difference figure
Cuir — Essais chimiques — Détermination du pH et de l’indice de différence

IULTCS/IUC 11:2018(E)
Deleted: Copyright notice¶
This ISO document is a Draft International
Standard and is copyright‐protected by ISO.
Except as permitted under the applicable laws
of the user's country, neither this ISO draft nor
any extract from it may be reproduced, stored
in a retrieval system or transmitted in any
form or by any means, electronic,
photocopying, recording or otherwise, without
prior written permission being secured.¶
Requests for permission to reproduce should
be addressed to either ISO at the address
below or ISO's member body in the country of
the requester.¶
ISO copyright office¶
Case postale 56 • CH‐1211 Geneva 20¶
Tel. + 41 22 749 01 11¶
Fax + 41 22 749 09 47¶
E‐mail copyright@iso.org¶
Web www.iso.org¶
Reproduction may be subject to royalty
payments or a licensing agreement.¶
Violators may be prosecuted.¶
ii © ISO 2018 – All rights reserved

IULTCS/IUC 11:2018(E)
Contents Page
Foreword . iv
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4  Principle . 1
5  Reagents . 2
6  Apparatus . 2
7  Sampling and preparation of the samples . 2
8  Procedure . 2
8.1  Preparation of the extract . 2
8.2  Calibration of the pH meter . 3
8.3  Determination of the pH value . 3
8.4  Determination of the difference figure . 3
9  Test report . 3

IULTCS/IUC 11:2018(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 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 the following
URL: www.iso.org/iso/foreword.html
This document was prepared by the Chemical Tests Commission of the International Union of Leather
Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of
which is held by UNI, in accordance with the agreement on technical cooperation between ISO and CEN Deleted: Agreement
(Vienna Agreement).
It is based on IUC 11 published in J. Soc. Leather Tech. Chem., 49, pp. 25–29, 1965, and declared an
official method of the IULTCS in 1965.
IULTCS, originally formed in 1897, is a world‐wide organization of professional leather societies to
further the advancement of leather science and technology. IULTCS has three Commissions, which are
responsible for establishing international methods for the sampling and testing of leather. ISO
recognizes IULTCS as an international standardizing body for the preparation of test methods for
leather.
This third edition cancels and replaces the second edition (ISO 4045:2008), which has been technically
revised as follows:
— change in title to include “and difference figure”;
— 5.1 and 6.1 have been revised;
— Clause 7 has been revised: two samples are only prepared when there is enough leather;
— 8.1 has been revised to more clearly explain the procedure;
iv © ISO 2018 – All rights reserved

IULTCS/IUC 11:2018(E)
— 8.2 has been added (previously part of the next clause);
— 8.3 and 8.4 (previously 8.2 and 8.3) have been revised a
...


INTERNATIONAL ISO
STANDARD 4045
IULTCS/IUC 11
Third edition
2018-05
Leather — Chemical tests —
Determination of pH and difference
figure
Cuir — Essais chimiques — Détermination du pH et de l'indice de
différence
Reference numbers
IULTCS/IUC 11:2018(E)
©
ISO 2018
IULTCS/IUC 11:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

IULTCS/IUC 11:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Sampling and preparation of the samples . 2
8 Procedure. 2
8.1 Preparation of the extract . 2
8.2 Calibration of the pH meter . 3
8.3 Determination of the pH value . 3
8.4 Determination of the difference figure. 3
9 Test report . 3
IULTCS/IUC 11:2018(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 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 the following
URL: www .iso .org/iso/foreword .html
This document was prepared by the Chemical Tests Commission of the International Union of Leather
Technologists and Chemists Societies (IUC Commission, IULTCS) in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of
which is held by UNI, in accordance with the agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
It is based on IUC 11 published in J. Soc. Leather Tech. Chem., 49, pp. 25–29, 1965, and declared an official
method of the IULTCS in 1965.
IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to
further the advancement of leather science and technology. IULTCS has three Commissions, which
are responsible for establishing international methods for the sampling and testing of leather. ISO
recognizes IULTCS as an international standardizing body for the preparation of test methods for
leather.
This third edition cancels and replaces the second edition (ISO 4045:2008), which has been technically
revised as follows:
— change in title to include “and difference figure”;
— 5.1 and 6.1 have been revised;
— Clause 7 has been revised: two samples are only prepared when there is enough leather;
— 8.1 has been revised to more clearl
...


NORME ISO
INTERNATIONALE 4045
IULTCS/IUC 11
Troisième édition
2018-05
Cuir — Essais chimiques —
Détermination du pH et de l'indice de
différence
Leather — Chemical tests —  Determination of pH and difference figure
Numéros de référence
IULTCS/IUC 11:2018(F)
©
ISO 2018
IULTCS/IUC 11:2018(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2018
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en oeuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Tél.: +41 22 749 01 11
Fax: +41 22 749 09 47
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2018 – Tous droits réservés

IULTCS/IUC 11:2018(F)
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Principe . 1
5 Réactifs . 1
6 Appareillage . 2
7 Échantillonnage et préparation des échantillons . 2
8 Mode opératoire. 2
8.1 Préparation de l'extrait . 2
8.2 Étalonnage du pH-mètre . 3
8.3 Détermination du pH . 3
8.4 Détermination de l'indice de différence . 3
9 Rapport d'essai . 3
IULTCS/IUC 11:2018(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www
.iso .org/directives).
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www .iso .org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir le lien suivant: www .iso .org/iso/fr/avant -propos .html
Le présent document a été élaboré par la Commission d'essais chimiques de l'Union internationale des
sociétés de techniciens et chimistes du cuir (commission IUC, IULTCS) en collaboration avec le comité
technique du Comité européen de normalisation (CEN) CEN/TC 289, Cuir, dont le secrétariat est tenu
par l'UNI, conformément à l'accord de coopération technique entre l'ISO et le CEN (Accord de Vienne).
Il est basé sur le document IUC 11, qui a été publié dans le J. Soc. Leather Tech. Chem., 49, pp. 25–29,
1965, et déclaré méthode officielle de l’IULTCS en 1965.
L'IULTCS est une organisation mondiale de sociétés professionnelles des industries du cuir fondée
en 1897 ayant pour mission de favoriser l'avancement des sciences et technologies du cuir. L’IULTCS
compte trois commissions, qui sont responsables de l’établissement de méthodes internationales
d’échantillonnage et d’essai des cuirs. L’ISO reconnaît l’IULTCS en tant qu’organisme international à
activités normatives pour l’élaboration de méthodes d’essai relatives au cuir.
Cette troisième édition annule et remplace la deuxième édition (ISO 4045:2008) qui a fait l’objet d’une
révision technique comme suit:
— modification du titre pour inclure «et de l'indice de différence»;
— les paragraphes 5.1 et 6.1 ont été révisés;
— l'Article 7 a été révisé: deux échantillons ne sont préparés que lorsqu'il y a assez de cuir;
— le paragraphe 8.1 a été révisé afin de mieux expliciter le mode opératoire;
— le paragraphe 8.2 a été ajouté (ancienne part
...


NORME ISO
INTERNATIONALE 4045
IULTCS/IUC 11
Troisième édition
2018-05
Cuir — Essais chimiques —
Détermination du pH et de l'indice de
différence
Leather — Chemical tests —  Determination of pH and difference figure
Numéros de référence
IULTCS/IUC 11:2018(F)
©
ISO 2018
IULTCS/IUC 11:2018(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2018
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en oeuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Tél.: +41 22 749 01 11
Fax: +41 22 749 09 47
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2018 – Tous droits réservés

IULTCS/IUC 11:2018(F)
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Principe . 1
5 Réactifs . 1
6 Appareillage . 2
7 Échantillonnage et préparation des échantillons . 2
8 Mode opératoire. 2
8.1 Préparation de l'extrait . 2
8.2 Étalonnage du pH-mètre . 3
8.3 Détermination du pH . 3
8.4 Détermination de l'indice de différence . 3
9 Rapport d'essai . 3
IULTCS/IUC 11:2018(F)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir www
.iso .org/directives).
L'attention est appelée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www .iso .org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir le lien suivant: www .iso .org/iso/fr/avant -propos .html
Le présent document a été élaboré par la Commission d'essais chimiques de l'Union internationale des
sociétés de techniciens et chimistes du cuir (commission IUC, IULTCS) en collaboration avec le comité
technique du Comité européen de normalisation (CEN) CEN/TC 289, Cuir, dont le secrétariat est tenu
par l'UNI, conformément à l'accord de coopération technique entre l'ISO et le CEN (Accord de Vienne).
Il est basé sur le document IUC 11, qui a été publié dans le J. Soc. Leather Tech. Chem., 49, pp. 25–29,
1965, et déclaré méthode officielle de l’IULTCS en 1965.
L'IULTCS est une organisation mondiale de sociétés professionnelles des industries du cuir fondée
en 1897 ayant pour mission de favoriser l'avancement des sciences et technologies du cuir. L’IULTCS
compte trois commissions, qui sont responsables de l’établissement de méthodes internationales
d’échantillonnage et d’essai des cuirs. L’ISO reconnaît l’IULTCS en tant qu’organisme international à
activités normatives pour l’élaboration de méthodes d’essai relatives au cuir.
Cette troisième édition annule et remplace la deuxième édition (ISO 4045:2008) qui a fait l’objet d’une
révision technique comme suit:
— modification du titre pour inclure «et de l'indice de différence»;
— les paragraphes 5.1 et 6.1 ont été révisés;
— l'Article 7 a été révisé: deux échantillons ne sont préparés que lorsqu'il y a assez de cuir;
— le paragraphe 8.1 a été révisé afin de mieux expliciter le mode opératoire;
— le paragraphe 8.2 a été ajouté (ancienne part
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...