ISO 15592-2:2025

International
Standard
ISO 15592-2
Second edition
Fine-cut tobacco and smoking
articles made from it — Methods
of sampling, conditioning and
analysis —
Part 2:
Atmosphere for conditioning
and testing
Tabac à rouler et objets confectionnés à partir de ce type de
tabac — Méthodes d'échantillonnage, de conditionnement et
d'analyse —
Partie 2: Atmosphère de conditionnement et d'essai
PROOF/ÉPREUVE
Reference number
© ISO 2025
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Atmosphere specifications . 2
4.1 Conditioning atmosphere.2
4.2 Test atmosphere .2
5 Conditioning . 3
5.1 Duration of conditioning . .3
5.2 Method of storage in the conditioning cabinet .3
5.3 Checking of equilibrium .3
Annex A (informative) Method of conditioning when electronically controlled cabinets are not
available . 4
Bibliography . 5
PROOF/ÉPREUVE
iii
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 126, Tobacco and tobacco products.
This second edition cancels and replaces the first edition (ISO 15592-2:2001), which has been technically
revised.
The main changes are as follows:
— the document has been harmonized with ISO 3402:2023;
— the Bibliography have been updated.
A list of all parts in the ISO 15592 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.
PROOF/ÉPREUVE
iv
Introduction
[3]
ISO 3402 was based on the 1991 revision of CORESTA Recommended Method No. 21 and was produced
in order to specify a standard atmosphere for conditioning leaf tobacco, and cut tobacco destined for the
manufacture of cigarettes and for the manufactured cigarettes themselves.
Fine-cut tobacco is produced and sold at much higher moisture levels than tobacco used for manufacturing
cigarettes. Consequently, ISO 3402 is not applicable to fine-cut tobacco or smoking articles made from it.
[4]
This document is based on the CORESTA Recommended Method No. 42.
PROOF/ÉPREUVE
v
International Standard ISO 15592-2:2025(en)
Fine-cut tobacco and smoking articles made from it —
Methods of sampling, conditioning and analysis —
Part 2:
Atmosphere for conditioning and testing
1 Scope
This document specifies an atmosphere for conditioning and testing samples of fine-cut tobacco and test
pieces made from it.
It is applicable to tests on fine-cut tobacco and products and materials used in the manufacture of fine-cut
smoking articles for which a prior conditioning is necessary. It is not applicable in the case of test methods
for which particular test conditions are laid down elsewhere, for example other tobacco products which are
given in ISO 3402.
2 Normative references
There are no normative references in this document.
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 https:// www .electropedia .org/
3.1
atmosphere
ambient conditions defined by one or more of the following parameters:
— temperature
— relative
...

ISO/DIS PRF 15592-2:2025(en)
ISO/TC 126/WG 19
Secretariat: DIN
Date: 2025-06-2007-14
Fine-cut tobacco and smoking articles made from it — Methods of
sampling, conditioning and analysis — Part 2: Atmosphere for
conditioning and testing
Part 2:
Atmosphere for conditioning and testing
Tabac à rouler et objets confectionnés à partir de ce type de tabac — Méthodes d'échantillonnage, de
conditionnement et d'analyse —
Partie 2: Atmosphère de conditionnement et d'essai
PROOF
ISO #####-#:####(X/PRF 15592-2:2025(en)
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
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO #### 2025 – All rights reserved
ii
ISO/DIS 15992PRF 15592-2:2025(en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Atmosphere specifications . 2
5 Conditioning . 3
Annex A (informative) Method of conditioning when electronically controlled cabinets are not
available . 5
Bibliography . 6

Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Atmosphere specifications . 2
4.1 Conditioning atmosphere . 2
4.2 Test atmosphere. 2
5 Conditioning . 3
5.1 Duration of conditioning . 3
5.2 Method of storage in the conditioning cabinet . 3
5.3 Checking of equilibrium . 3
Annex A (informative) Method of conditioning when electronically controlled cabinets are not
available . 4
A.1 Introduction . 4
A.2 Method . 4
A.2.1 Making the salt solution . 4
A.2.2 Use in the cabinet . 4
A.3 Validation of conditioning atmosphere . 4
Bibliography . 5

© ISO 2025 – All rights reserved
iii
ISO #####-#:####(X/PRF 15592-2:2025(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.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 126, Tobacco and tobacco products.
This second edition cancels and replaces the first edition (ISO 15592-2:2001), which has been technically
revised.
The main changes are as follows:
— — Harmonisationthe document has been harmonized with ISO 3402:2023;
— — the Bibliography have been updated.
A list of all parts in the ISO 15592 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.htmlwww.iso.org/members.html.
iv © ISO #### 2025 – All rights reserved
iv
ISO/DIS 15992PRF 15592-2:2025(en)
Introduction
[ ]
ISO 3402 was based on the 1991 revision of CORESTA Recommended Method No. 2121 0 and was produced
in order to specify a standard atmosphere for conditioning leaf tobacco, and cut tobacco destined for the
manufacture of cigarettes and for the manufactured cigarettes themselves.
Fine-cut tobacco is produced and sold at much higher moisture levels than tobacco used for manufacturing
cigarettes. Consequently, ISO 3402 is not applicable to fine-cut tobacco or smoking articles made from it.
[ ]
This document is based on the CORESTA Recommended Method No. 42. 0
© ISO 2025 – All rights reserved
v
DRAFT International Standard ISO/DIS 15992-2:2025(en)

Fine-cut tobacco and smoking articles made from it — Methods of
sampling, conditioning and analysis —
Part 2:
Atmosphere for conditioning and testing
1 Scope
This document specifies an atmosphere for conditioning and testing samples of fine-cut tobacco and test
pieces made from it.
It is applicable to tests on fine-cut tobacco and products and materials us
...