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.

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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.

Introduction

ISO 3402 was based on the 1991 revision of CORESTA Recommended Method No. 21^[³^] 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.^[ 4 ^]

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

3 Terms and definitions

4 Atmosphere specifications

4.1 Conditioning atmosphere

4.2 Test atmosphere

5 Conditioning

5.1 Duration of conditioning

5.2 Method of storage in the conditioning cabinet

5.3 Checking of equilibrium

Bibliography