EN ISO 1833-2:2010

SLOVENSKI STANDARD
01-september-2013
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Textiles - Quantitative chemical analysis - Part 2: Ternary fibre mixtures (ISO 1833-
2:2006)
Textilien - Quantitative chemische Analysen - Teil 2: Ternäre Fasermischungen (ISO
1833-2:2006)
Textiles - Analyse chimique quantitative - Partie 2: Mélanges ternaires de fibres (ISO
1833-2:2006)
Ta slovenski standard je istoveten z: EN ISO 1833-2:2010
ICS:
59.060.01 Tekstilna vlakna na splošno Textile fibres in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 1833-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2010
ICS 59.060.01
English Version
Textiles - Quantitative chemical analysis - Part 2: Ternary fibre
mixtures (ISO 1833-2:2006)
Textiles - Analyse chimique quantitative - Partie 2: Textilien - Quantitative chemische Analysen - Teil 2:
Mélanges ternaires de fibres (ISO 1833-2:2006) Ternäre Fasermischungen (ISO 1833-2:2006)
This European Standard was approved by CEN on 12 September 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1833-2:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
The text of ISO 1833-2:2006 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 1833-2:2010 by
Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the
latest by April 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 1833-2:2006 has been approved by CEN as a EN ISO 1833-2:2010 without any modification.

INTERNATIONAL ISO
STANDARD 1833-2
First edition
2006-06-01
Textiles — Quantitative chemical
analysis —
Part 2:
Ternary fibre mixtures
Textiles — Analyses chimiques quantitatives —
Partie 2: Mélanges ternaires de fibres

Reference number
ISO 1833-2:2006(E)
©
ISO 2006
ISO 1833-2:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 1833-2:2006(E)
Contents Page
Foreword. iv
Introduction . vi
1 Scope .1
2 Normative references .1
3 Principle.1
4 Reagents and apparatus .1
5 Conditioning and testing atmosphere.1
6 Sampling and pre-treatment of sample .1
7 Procedure .2
8 Calculation and expression of results.2
9 Method of analysis by a combination of manual separation and chemical means.7
10 Precision of methods .7
11 Test report .7
Annex A (informative) Examples of the calculation of percentages of the components of certain
ternary mixtures using some of the variants described in 8.2 .8
Annex B (informative) Table of typical ternary mixtures which may be analysed using methods of
analysis of binary mixtures specified in the parts of ISO 1833 .11
Bibliography .14

ISO 1833-2:2006(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 1833-2 was prepared by Technical Committee ISO/TC 38, Textiles.
This first edition cancels and replaces ISO 5088:1976, which has been withdrawn.
ISO 1833 consists of the following parts, under the general title Textiles — Quantitative chemical analysis:
⎯ Part 1: General principles of testing
⎯ Part 2: Ternary fibre mixtures
⎯ Part 3: Mixtures of acetate and certain other fibres (method using acetone)
⎯ Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite)
⎯ Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate)
⎯ Part 7: Mixtures of polyamide and certain other fibres (method using formic acid)
⎯ Part 8: Mixtures of acetate and triacetate fibres (method using acetone)
⎯ Part 9: Mixtures of acetate and triacetate fibres (method using benzyl alcohol)
⎯ Part 10: Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane)
⎯ Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid)
⎯ Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastanes and certain other
fibres (method using dimethylformamide)
⎯ Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide /acetone)
⎯ Part 14: Mixtures of acetate and certain chlorofibres (method using acetic acid)
⎯ Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content)
iv © ISO 2006 – All rights reserved

ISO 1833-2:2006(E)
⎯ Part 16: Mixtures of polypropylene fibres and certain other fibres (method using xylene)
⎯ Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method using
sulfuric acid)
⎯ Part 18: Mixtures of silk and wool or hair (method using sulfuric acid)
⎯ Part 19: Mixtures of cellulose fibres and asbestos (method by heating)
⎯ Part 21: Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain
other fibres (method using cyclohexanone)
The following parts are under preparation:
⎯ Part 6: Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using
formic acid and zinc chloride)
⎯ Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide)
⎯ Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using
formic acid and zinc chlorate)
⎯ Part 23: Mixtures of polyethylene and polypropylene (method using cyclohexanone)
⎯ Part 24: Mixtures of polyester and some other fibres (method using phenol and tetrachloroethane)

ISO 1833-2:2006(E)
Introduction
The methods of quantitative analysis of mixtures of textile fibres are based on two processes: the manual
separation and the chemical separation of fibre types.
The method of manual separation should be used whenever possible, since it generally gives more accurate
results than the chemical method. It can be used for all textiles whose component fibres do not form an
intimate mixture, as, for example, in the case of yarns composed of several elements each of which is made
up of one type of fibre, or fabrics in which the warp is of a different type of fibre from the weft, or knitted fabrics
capable of being unravelled and made up of yarns of different types.
In general, the methods for quantitative chemical analysis of ternary fibre mixtures are based on the selective
solution of the individual components of the mixture. Four variants of this procedure are possible.
⎯ Variant 1: Using two different test specimens, component (a) is dissolved from the first test specimen and
component (b) from the second test specimen. The insoluble residues of each test specimen are weighed
and the percentage of each soluble component is calculated from the respective losses in mass. The
percentage of the third component (c) is calculated by difference.
⎯ Variant 2: Using two different test specimens, a component (a) is dissolved from the first test specimen,
and two components (a and b) from the second test specimen. The insoluble residue of the first test
specimen is weighed and the percentage of the component (a) is calculated from the loss in mass. The
insoluble residue of the second test specimen is weighed: it corresponds to component (c). The
percentage of the third component (b) is calculated by difference.
⎯ Variant 3: Using two different test specimens, two components (a and b) are dissolved from the first test
specimen and two components (b and c) from the second test specimen. The insoluble residues
correspond to the two components (c) and (a) respectively. The percentage of the third component (b) is
calculated by difference.
⎯ Variant 4: Using only one test specimen, one of the components is removed, after which the insoluble
residue formed by the two other fibres is weighed and the percentage of the soluble component is
calculated from the loss in mass. One of the two fibres of the residue is dissolved, the insoluble
component is weighed and the percentage of the second soluble component is calculated from the loss in
mass.
Where a choice is possible, it is advisable to use one of the first three variants. Where chemical analysis is
used, take care to choose methods prescribing solvents which dissolve only the required fibre or fibres, and
leave undissolved the other fibre or fibres.
By way of example, Annex B contains a certain number of ternary mixtures, together with methods for
analysing binary mixtures which can, in principle, be used for analysing these ternary mixtures.
In order to reduce the possibility of error to a minimum, it is recommended that, whenever possible, chemical
analysis using at least two of the four above-mentioned variants should be made.
Mixtures of fibres used during processing and, to a lesser extent, in finished textiles may contain non-fibrous
matter such as fats, waxes or dressings, or water-soluble matter either occurring naturally or added to
facilitate processing. Non-fibrous matter should be removed before analysis. A method of pre-treatment for
removing oils, fats, waxes and water-soluble matter is given in ISO 1833-1:2006, Annex A.
In addition, textiles may contain resins or other matter added to confer special properties. Such matter,
including dyestuffs in exceptional cases, may interfere with the action of the reagent on the soluble
components and/or it may be partially or completely removed by the reagents.
vi © ISO 2006 – All rights reserved

ISO 1833-2:2006(E)
This type of added matter may thus cause errors and should be removed before the sample is analysed. If it is
impossible to remove such added matter, the methods for quantitative chemical analysis given in Annex B are
no longer applicable.
Dye in dyed fibre is considered to be an integral part of the fibre and is not removed.
Analyses are conducted on the basis of dry mass and a procedure is given for its determination.
The result is expressed by reference to the dry mass or by reference to this mass after application of the
conventional recovery rate.
Before proceeding with any analysis, all the fibres present in the mixture should be identified. In some
chemical methods, the insoluble components of a mixture may be partially dissolved in the reagent used to
dissolve the soluble component or components. Whenever possible, reagents have been chosen that have
little or no effect on the insoluble fibres. If a loss in mass is known to occur during the analysis, the result
should be corrected; correction factors are given for this purpose. These factors have been determined in
several laboratories by treating, with the appropriate reagent as specified in the method of analysis, fibres
cleaned by the pre-treatment. These correction factors apply only to undegraded fibres and different
correction factors may be necessary if the fibres have been degraded before or during processing. If the fourth
variant, in which a textile fibre is subjected to the successive action of two different solvents, should be used,
correction factors should be applied for possible losses in mass undergone by the fibre in the two treatments.
At least two determinations should be made, both in the case of manual separation and in the case of
chemical separation.
INTERNATIONAL STANDARD ISO 1833-2:2006(E)

Textiles — Quantitative chemical analysis —
Part 2:
Ternary fibre mixtures
1 Scope
This part of ISO 1833 specifies methods of quantitative chemical analysis of various ternary mixtures of fibres.
The field of application of each method for analysing binary mixtures, specified in the parts of ISO 1833,
indicates the fibres to which the method is applicable.
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 1833-1:2006, Textiles — Quantitative chemical analysis — Part 1: General principles of testing
3 Principle
After identification of the components of a mixture, the non-fibrous matter is removed by a suitable
pre-treatment, and then one or more of the four variants of the process of selective solution described in
the Introduction is applied.
Except where this presents technical difficulties, it is preferable to dissolve the major fibre component so as to
obtain the minor fibre component as the final residue.
4 Reagents and apparatus
Use the apparatus and reagents described in ISO 1833-1.
5 Conditioning and testing atmosphere
See ISO 1833-1.
6 Sampling and pre-treatment of sample
See ISO 1833-1.
ISO 1833-2:2006(E)
7 Procedure
See ISO 1833-1.
8 Calculation and expression of results
8.1 General
Express the mass of each component as a percentage of the total mass of fibre present in the mixture.
Calculate the result on the basis of clean dry mass, to which is applied firstly the agreed conventional recovery
rate and secondly the correction factor necessary to take account of loss of matter during pre-treatment and
analysis.
8.2 Calculation of percentages of mass of clean dry fibres, disregarding loss of fibre mass
during pre-treatment
NOTE Some examples of calculations are given in Annex A.
8.2.1 Variant 1
Formulae to be applied where a component of the mixture is removed from one specimen and another
component from a second specimen:
⎡⎤
⎛⎞
dr d
r
221 2
⎢⎥
Pd=−× + ×⎜⎟1− ×100
⎜⎟
dmm d
⎢⎥
112 1
⎣⎦⎝⎠
⎡⎤
⎛⎞
ddrr
421 4
Pd=−⎢⎥× + ×11− ×00
⎜⎟
2 4
⎜⎟
dmm d
⎢⎥
321 3
⎝⎠
⎣⎦
PP=−100 +P
()
where
P is the percentage of the first clean dry component (component in the first specimen dissolved in the
first reagent);
P is the percentage of the second clean dry component (component in the second specimen dissolved
in the second reagent);
P is the percentage of the third clean dry component (component undissolved in both specimens);
m is the dry mass of the first specimen after pre-treatment;
m is the dry mass of the second specimen after pre-treatment;
r is the dry mass of the residue after removal of the first component from the first specimen in the first
reagent;
r is the dry mass of the residue after removal of the second component from the second specimen in
the second reagent;
2 © ISO 2006 – All rights reserved

ISO 1833-2:2006(E)
d is the correction factor for loss in mass, in the first reagent, of the second component undissolved in
1)
the first specimen ;
d is the correction factor for loss in mass, in the first reagent, of the third component undissolved in the
1)
first specimen ;
d is the correction factor for loss in mass, in the second reagent, of the first component undissolved in
1)
the second specimen ;
d is the correction factor for loss in mass, in the second reagent, of the third component undissolved in
1)
the second specimen .
8.2.2 Variant 2
Formulae to be applied in the case where a component (a) is removed from the first test specimen, leaving as
residue, the other two components (b + c), and the two components (a + b) are removed from the second test
specimen, leaving as residue the third component (c):
PP=−100 +P
()
dr d
11 1
PP=×100 − ×
md
dr
4 2
P=× 100
m
where
P is the percentage of the first clean dry component (component of the first specimen soluble in the
first reagent);
P is the percentage of the second clean dry component (component soluble, at the same time as the
first component of the second specimen, in t
...