ISO 3260:2015
(Main)Pulps — Determination of chlorine consumption (Degree of delignification)
Pulps — Determination of chlorine consumption (Degree of delignification)
ISO 3260:2015 specifies a method for the determination of the degree of delignification of pulp by measuring its chlorine consumption. This method is applicable to all kinds of pulp.
Pâtes — Détermination de la consommation en chlore (Degré de délignification)
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 3260
Third edition
2015-04-01
Pulps — Determination of
chlorine consumption (Degree of
delignification)
Pâtes — Détermination de la consommation en chlore (Degré de
délignification)
Reference number
ISO 3260:2015(E)
©
ISO 2015
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ISO 3260:2015(E)
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ii © ISO 2015 – All rights reserved
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ISO 3260:2015(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Preparation of sample . 3
8 Procedure. 3
8.1 Test portion . 3
8.2 Determination . 4
9 Expression of results . 4
10 Test report . 5
Bibliography . 6
© ISO 2015 – All rights reserved iii
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ISO 3260:2015(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
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For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 6, Paper, board and pulps.
This third edition cancels and replaces the second edition (ISO 3260:1982), of which it constitutes a
minor revision.
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ISO 3260:2015(E)
Introduction
The method specified in this International Standard for determining the degree of delignification of pulp
by measuring its chlorine consumption under specified conditions is related to that for determining
the degree of delignification of pulp by measuring its potassium permanganate consumption under
specified conditions, given in ISO 302, Pulps — Determination of Kappa number. Unlike that method, the
method for the determination of chlorine consumption has the merit of not being restricted to pulps
obtained in yields under 60 %.
It has been shown experimentally that there is a linear relationship between the chlorine consumption
and the total lignin content of pulp. This relationship is independent of the method used in the
manufacture of the pulp.
© ISO 2015 – All rights reserved v
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INTERNATIONAL STANDARD ISO 3260:2015(E)
Pulps — Determination of chlorine consumption (Degree
of delignification)
WARNING — The method specified in this International Standard involves the use of hazardous
chemicals. Appropriate precautions must be taken to ensure the proper use and disposal of
these chemicals.
1 Scope
This International Standard specifies a method for the determination of the degree of delignification of
pulp by measuring its chlorine consumption.
This method is applicable to all kinds of pulp.
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 638, Paper, board and pulps — Determination of dry matter content — Oven-drying method
3 Terms and definitions
For the purposes of this do
...
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