SIST EN ISO 1833-2:2020

SLOVENSKI STANDARD
01-september-2020
Nadomešča:
SIST EN ISO 1833-2:2013
Tekstilije - Kvantitativna kemijska analiza - 2. del: Trikomponentne mešanice
vlaken (ISO 1833-2:2020)
Textiles - Quantitative chemical analysis - Part 2: Ternary fibre mixtures (ISO 1833-
2:2020)
Textilien - Quantitative chemische Analysen - Teil 2: Ternäre Fasermischungen (ISO
1833-2:2020)
Textiles - Analyse chimique quantitative - Partie 2: Mélanges ternaires de fibres (ISO
1833-2:2020)
Ta slovenski standard je istoveten z: EN ISO 1833-2:2020
ICS:
59.060.01 Tekstilna vlakna na splošno Textile fibres in general
71.040.40 Kemijska analiza Chemical analysis
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 1833-2
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2020
EUROPÄISCHE NORM
ICS 59.060.01 Supersedes EN ISO 1833-2:2010
English Version
Textiles - Quantitative chemical analysis - Part 2: Ternary
fibre mixtures (ISO 1833-2:2020)
Textiles - Analyse chimique quantitative - Partie 2: Textilien - Quantitative chemische Analysen - Teil 2:
Mélanges ternaires de fibres (ISO 1833-2:2020) Ternäre Fasermischungen (ISO 1833-2:2020)
This European Standard was approved by CEN on 12 June 2020.

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-CENELEC 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-CENELEC 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1833-2:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 1833-2:2020) has been prepared by Technical Committee ISO/TC 38 "Textiles"
in collaboration with 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 January 2021, and conflicting national standards shall
be withdrawn at the latest by January 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 1833-2:2010.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 1833-2:2020 has been approved by CEN as EN ISO 1833-2:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 1833-2
Second edition
2020-06
Textiles — Quantitative chemical
analysis —
Part 2:
Ternary fibre mixtures
Textiles — Analyse chimique quantitative —
Partie 2: Mélanges ternaires de fibres
Reference number
ISO 1833-2:2020(E)
©
ISO 2020
ISO 1833-2:2020(E)
© ISO 2020
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
ii © ISO 2020 – All rights reserved

ISO 1833-2:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents and apparatus . 2
6 Conditioning and testing atmosphere . 2
7 Sampling and pre-treatment of laboratory test sample . 2
8 Procedure. 2
9 Calculation and expression of results . 2
9.1 General . 2
9.2 Calculation of percentages of mass of clean dry fibres, disregarding loss of fibre
mass during pre-treatment . 3
9.2.1 Variant 1 . 3
9.2.2 Variant 2 . 4
9.2.3 Variant 3 . 4
9.2.4 Variant 4 . 5
9.3 Calculation of the percentage of each component with adjustment by agreed
moisture regains and, where appropriate, by correction factors for losses in mass
during pre- treatment operations . 6
9.4 Calculation of the quantitative analysis by manual separation . 7
9.4.1 General. 7
9.4.2 Calculation of the percentage mass of clean dry fibre disregarding loss in
fibre mass during pre-treatment . 7
9.4.3 Calculation of the percentage of each component with adjustment by
agreed moisture regain and, where appropriate, by correction factors for
losses in mass during pre-treatment . 8
10 Method of quantitative analysis by a combination of manual separation and
chemical means . 8
11 Precision of methods. 8
12 Test report . 8
Annex A (informative) Examples of the calculation of percentages of the components of
certain ternary mixtures using some of the variants described in 9.2 .9
Annex B (informative) Typical ternary mixtures which can be analysed using methods of
analysis of binary mixtures specified in the parts of ISO 1833 .12
Bibliography .17
ISO 1833-2:2020(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
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 38, Textiles, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile
products, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This second edition cancels and replaces the first edition (ISO 1833-2:2006), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the Introduction has been deleted and relevant information have been moved to Clause 4;
— Clause 2 has been updated;
— the mandatory Clause 3 has been added;
— in Clause 4 (former Clause 3), the explanation of the 4 variants has been added;
— in 9.3, additional instruction in case of pre-treatment by extraction with light petroleum and water
has been introduced;
— in Table B.1
— reference to lyocell (beside viscose, cupro and/or modal) has been added;
— additional cases: n°36 for Variant 3, n°37 and n°38 for new fibres (elastolefin, melamine), n°39
and n°40 for mixtures with elastane have been introduced;
— the Bibliography has been updated (references to parts of ISO 1833 have been removed).
A list of all parts in the ISO 1833 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.
iv © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 1833-2:2020(E)
Textiles — Quantitative chemical analysis —
Part 2:
Ternary fibre mixtures
1 Scope
This document specifies methods of quantitative analysis of various ternary mixtures of fibres.
The field of application of each method for analysing mixtures, specified in the parts of ISO 1833,
indicates the fibres to which the method is applicable.
This document is applicable to mixtures of fibres with more than three components provided that
the combination of test methods leads back to simple cases of fibre mixtures. Table B.1 illustrates the
typical ternary mixtures and their applied corresponding parts of the ISO 1833 series.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1833-1:2020, Textiles — Quantitative chemical analysis — Part 1: General principles of testing
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 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 this clause 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.
In general, the methods for quantitative chemical analysis of ternary fibre mixtures are based on the
selective solution of the individual components. 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 of the two soluble components 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
ISO 1833-2:2020(E)
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, after removal of one of the components, 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. If this variant is used when a test specimen is subjected to the successive action of two
different solvents, correction factors shall be applied for possible losses in mass undergone by the
test specimen in the two treatments.
Where a choice is possible, it is recommended 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.
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.
NOTE 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.
If the fibre mixture in a sample contains more than 3 components, where relevant, the application of
combined manual separations and chemical analysis leads to decrease the number of components in
sub-samples so that the given procedure in ISO 1833-1 or ISO 1833-2 can be applied.
5 Reagents and apparatus
Use the apparatus and reagents described in ISO 1833-1.
6 Conditioning and testing atmosphere
See ISO 1833-1.
7 Sampling and pre-treatment of laboratory test sample
See ISO 1833-1.
8 Procedure
See ISO 1833-1.
9 Calculation and expression of results
9.1 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 moisture regain
and secondly the correction factor necessary to take account of loss of matter during pre-treatment and
analysis.
2 © ISO 2020 – All rights reserved

ISO 1833-2:2020(E)
9.2 Calculation of percentages of mass of clean dry fibres, disregarding loss of fibre
mass during pre-treatment
NOTE Some examples of calculation are given in Annex A.
9.2.1 Variant 1
Formulae (1) to (3) are applied where a component of the mixture is removed from one specimen and
another component from a second specimen.
d r r  d 
2 1 2 2
P =−  d ×+ ×−1  ×100 (1)
 
 
1 2
d m m d
  
1 1 2 1
d r r d
  
4 2 1 4
P =−  d ×+ ×− 1 × 100 (2)
  
2 4
d m m d
 3 2 1  3 
PP=− 100 +P (3)
()
31 2
where
P is the percentage of the first clean dry component (component in the first specimen soluble in
the first reagent);
P is the percentage of the second clean dry component (component in the second specimen
soluble 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;
d is the correction factor for loss in mass, in the first reagent, of the second component
undissolved in the first specimen;
d is the correction factor for loss in mass, in the first reagent, of the third component
undissolved in the first specimen;
d is the correction factor for loss in mass, in the second reagent, of the first component
undissolved in the second specimen;
d is the correction factor for loss in mass, in the second reagent, of the third component
undissolved in the second specimen.
The values of d are indicated in the relevant parts of the ISO 1833 series.
ISO 1833-2:2020(E)
9.2.2 Variant 2
Formulae (4) to (6) are applied in cases 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 (4)
()
12 3
dr d
11 1
P =×100  −× P (5)
2 3
m d
1 2
dr
P =× 100 (6)
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 (com
...