ISO 12030:2010

INTERNATIONAL ISO
STANDARD 12030
First edition
2010-05-01

Tobacco and tobacco products — Non-
destructive determination of strips
density variation ratio in case — Ionizing
radiation method
Tabac et produits du tabac — Détermination non destructive de la
variation de densité des strips en caisse — Méthode par radiations
ionisantes




Reference number
ISO 12030:2010(E)
©
ISO 2010

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ISO 12030:2010(E)
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ii © ISO 2010 – All rights reserved

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ISO 12030:2010(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Principle.1
5 Apparatus.2
6 Procedure.3
6.1 Sampling.3
6.2 Experimental protocol.3
6.3 Distribution of detection spots .4
6.4 Determination of water content .4
6.5 Determination of density .4
7 Expression of results.5
8 Test report.5
Annex A (normative) Determination of the density of standard pieces and calibration of density
determination instrument .6
Annex B (informative) Main components of X-ray device .8
Bibliography.10

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ISO 12030:2010(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12030 was prepared by Technical Committee ISO/TC 126, Tobacco and tobacco products,
Subcommittee SC 2, Leaf tobacco.
iv © ISO 2010 – All rights reserved

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ISO 12030:2010(E)
Introduction
The density variation ratio (DVR) is one of the significant factors that influence tobacco aging and primary
processing (see Reference [1]). For example, the phenomena of oil loss, caking or even carbonization is easy
to take place in an aging process because of the larger DVR. The block of strips, which has a larger DVR, is
difficult to loosen in a conditioning cylinder. The larger DVR can lead to deterioration of taste and quality of
cigarette and hence it is important to detect DVR of strips still in its case (i.e. before introducing it into a
primary processing stream).
The standard method for detecting DVR of strips in case, used at present, is based on “9-point Static
Detection’’ (see Reference [2]). This method results in damage to strips, being applicable for only off-line
measurements and needing longer testing time. A non-destructive method, on the other hand, would be
quicker, amenable to both off-line and on-line measurements and would result in no damage to strips and
hence has been a subject of analytical research and development.
X-rays can easily penetrate the strips' case and their intensity correlates to the density of the material they
pass through, which would be a strips column in the case. The ionizing method has been widely used in many
[3]
other areas (see IEC 60692 ) and IEC has developed relevant standards for safe X-ray apparatus
[4]
(see IEC 60405 ). The X-ray apparatus used in the proposed method complies with these International
Standards and can therefore be considered to be a completely safe radiation source.
Thus the ionizing radiation (X-ray attenuation) method retains the advantages of a non-destructive method for
measurement of density of strips in the case, is amenable for on-line as well off-line measurements, is quick,
safe and relatively inexpensive. The present proposal elaborates on its application for measurement of density
of strips in the case.
There are more possibilities of measuring the density variation ratio in case. Any system with the same
accuracy can be used.

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INTERNATIONAL STANDARD ISO 12030:2010(E)

Tobacco and tobacco products — Non-destructive
determination of strips density variation ratio in case —
Ionizing radiation method
1 Scope
This International Standard specifies a method for determining density variation ratio (DVR) of strips in the
case.
2 Normative references
The following referenced documents are indispensable for the application 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 6488, Tobacco and tobacco products — Determination of water content — Karl Fischer method
ISO 16632, Tobacco and tobacco products — Determination of water content — Gas-chromatographic
method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
non-destructive determination
determination without any damage to the objects under study
3.2
density variation ratio
DVR
relative standard deviation of the strips density in case
4 Principle
The X-rays penetrate the tobacco strips in the case and lose their intensity depending on the density of the
strips. The measured intensity of X-rays can thus be related to strips density according to Equation (1).
1 I
i
ρ =− ln (1)
Ud××I B
m0
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ISO 12030:2010(E)
where
ρ i
...