oSIST prEN ISO 17072-1:2026

• Abstract:

  This document specifies a method for the determination of extractable metals in leather using extraction with an acid artificial-perspiration solution and subsequent determination with inductively coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS) or spectrometry of atomic fluorescence (SFA).; This method determines extractable metals in leather; it is not compound-specific or specific to the oxidation state of the metals. This method is especially suitable for determining the extractable chromium in chromium-tanned leathers.

• Status: Not Published
• Public Enquiry End Date: 09-Nov-2026
• ICS: 59.140.30 - Leather and furs
• Technical Committee: IUSN - Leather
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 07-Sep-2026
• Due Date: 25-Jan-2027
• Ref Project: prEN ISO 17072-1 - Leather - Chemical determination of metal content - Part 1: Extractable metals (ISO/DIS 17072-1:2026)

• Revises: SIST EN ISO 17072-1:2019 - Leather - Chemical determination of metal content - Part 1: Extractable metals (ISO 17072-1:2019)
• Effective Date: 04-Dec-2024

Overview

oSIST prEN ISO 17072-1:2026 is an internationally recognized standard developed by the Slovenian Institute for Standardization (SIST), in cooperation with ISO and CEN. This document specifies a method for determining the extractable metal content in leather. The standard employs extraction with an acid artificial-perspiration solution, followed by quantitative analysis using spectrometric techniques such as inductively coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS), or spectrometry of atomic fluorescence (SFA).

The test outlined in this standard is essential for monitoring and controlling the presence of certain metals, particularly extractable chromium in chromium-tanned leathers. The method is widely applicable across the leather industry for ensuring product safety and regulatory compliance.

Key Topics

• Extractable Metal Determination: Focuses on quantifying metals that can be leached from leather by artificial perspiration, simulating conditions of human contact.

• Applicable Metals: The method covers a broad range of metals, including but not limited to:

  • Chromium (Cr)
  • Nickel (Ni)
  • Lead (Pb)
  • Cadmium (Cd)
  • Mercury (Hg)
  • Zinc (Zn)
  • Aluminium (Al)
  • Copper (Cu)
  • Iron (Fe)

• Analytical Techniques: Results can be achieved by various advanced measurement methods:

  • ICP-OES
  • ICP-MS
  • Atomic Absorption Spectrometry (AAS)
  • Spectrometry of Atomic Fluorescence (SFA)

• Sample Preparation and Extraction: Leather samples are extracted using an acid artificial-perspiration solution under controlled temperature and time conditions. The extracts are then analyzed for metal content.

• Reporting and Expression of Results: Extracted metal concentrations are calculated and reported as milligrams per kilogram (mg/kg) of dry leather.

Applications

This standard is crucial for a variety of practical applications in the leather and related industries:

• Consumer Safety: Ensures that leather goods, such as footwear, garments, gloves, and accessories, meet safety thresholds for extractable metals, reducing the risk of allergic reactions or toxic exposure.
• Compliance and Quality Assurance: Facilitates compliance with international regulations and customer specifications on metal content in leather products.
• Manufacturing Quality Control: Used by producers and laboratories to monitor and control metal content during and after the tanning and finishing processes.
• Product Certification: Supports certification and labeling schemes for leather products, providing documented evidence of tested and controlled metal content.
• Market Access: Enables companies to meet export requirements and access global markets through adherence to recognized testing standards.

Related Standards

To ensure comprehensive assessment and testing of leather materials, the following standards are relevant in conjunction with oSIST prEN ISO 17072-1:2026:

• ISO 2418: Leather - Chemical, physical, mechanical and fastness tests - Position and preparation of specimens for testing
• ISO 4044: Leather - Chemical tests - Preparation of chemical test samples
• ISO 105-E04: Textiles - Tests for colour fastness - Colour fastness to perspiration
• ISO 11885: Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES)
• ISO 17294-2: Water quality - Application of inductively coupled plasma mass spectrometry (ICP-MS)
• ISO 15586: Water quality - Determination of trace elements using atomic absorption spectrometry with graphite furnace
• ISO 17852: Water quality - Determination of mercury - Method using atomic fluorescence spectrometry

By implementing ISO 17072-1:2026, organizations demonstrate a commitment to best practices in chemical safety, regulatory compliance, and product quality in the leather industry. This standard serves as a valuable reference for leather manufacturers, testing laboratories, regulatory authorities, and supply chain partners worldwide.

SLOVENSKI STANDARD
01-november-2026
Usnje - Kemijsko določevanje kovin - 1. del: Izločljive kovine (ISO/DIS 17072-
1:2026)
Leather - Chemical determination of metal content - Part 1: Extractable metals (ISO/DIS
17072-1:2026)
Leder - Chemische Bestimmung des Metallgehaltes - Teil 1: Extrahierbare Metalle
(ISO/DIS 17072-1:2026)
Cuir - Détermination chimique de la teneur en métal - Partie 1: Métaux extractibles
(ISO/DIS 17072-1:2026)
Ta slovenski standard je istoveten z: prEN ISO 17072-1
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 17072-1
IUC 27-1
IULTCS
Leather — Chemical determination
Secretariat: ISO
of metal content —
Voting begins on:
Part 1:
2026-08-25
Extractable metals
Voting terminates on:
2026-11-17
Cuir — Détermination chimique de la teneur en métal —
Partie 1: Métaux extractibles
ICS: 59.140.30
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 has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 17072-1:2026(en)
IUC 27-1:2026(en)
DRAFT
ISO/DIS 17072-1:2026(en)
International
IUC 27-1:2026(en)
Standard
ISO/DIS 17072-1
IUC 27-1
IULTCS
Leather — Chemical determination
Secretariat: ISO
of metal content —
Voting begins on:
Part 1:
Extractable metals
Voting terminates on:
Cuir — Détermination chimique de la teneur en métal —
Partie 1: Métaux extractibles
ICS: 59.140.30
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 has not been edited by the ISO Central 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
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Reference number
Published in Switzerland ISO/DIS 17072-1:2026(en)
IUC 27-1:2026(en)
ii
ISO/DIS 17072-1:2026(en)
IUC 27-1:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle . 2
5 Reagents . 2
6 Apparatus and materials . 3
7 Sampling and test specimen preparation . 3
8 Procedure . 4
8.1 Preparation of acid artificial-perspiration solution .4
8.2 Extraction of leather test specimen .4
8.3 Analysis by ICP, AAS and SFA.4
8.3.1 General .4
8.3.2 ICP . .4
8.3.3 AAS .5
8.3.4 Analysis by SFA technique .5
9 Calculation and expression of results . 5
10 Test report . 5
Annex A (informative) Interlaboratory test results and quantification limits . 7
Bibliography . 8

iii
ISO/DIS 17072-1:2026(en)
IUC 27-1:2026(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 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 Test 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).
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 17072-1:2019), which has been technically
revised as follows:
— all the words “sample” are replaced by “test specimen”;
— the reference of ISO 2418 has been modified;
— the last sentence in clause 9 has been deleted.
A list of all parts in the ISO 17072 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 17072-1:2026(en)
DRAFT International Standard
IUC 27-1:2026(en)
Leather — Chemical determination of metal content —
Part 1:
Extractable metals
1 Scope
This document specifies a method for the determination of extractable metals in leather using extraction
with an acid artificial-perspiration solution and subsequent determination with inductively coupled plasma
optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic
absorption spectrometry (AAS) or spectrometry of atomic fluorescence (SFA).
This method determines extractable metals in leather; it is not compound-specific or specific to the
oxidation state of the metals. This method is especially suitable for determining the extractable chromium
in chromium-tanned leathers.
The method is applicable for the determination of many extractable metals, including:
Aluminium (Al) Copper (Cu) Nickel (Ni)
Antimony (Sb) Iron (Fe) Potassium (K)
Arsenic (As) Lead (Pb) Selenium (Se)
Bari
...