EN ISO 1833-11:2017
(Main)Textiles - Quantitative chemical analysis - Part 11: Mixtures of certain cellulose fibres with certain other fibres (method using sulfuric acid) (ISO 1833-11:2017)
General Information
- Abstract
ISO 1833-11:2017 specifies a method, using sulfuric acid, to determine the mass percentage of cellulose fibres, after removal of non-fibrous matter, in textiles made of mixtures of
- natural and man-made cellulose fibres, such as cotton, flax, hemp, ramie, viscose, cupro, modal, lyocell
with
- polyester, polypropylene, elastomultiester, elastolefin and polypropylene/polyamide bicomponent.
- Status
- Published
- Publication Date
- 12-Sep-2017
- Withdrawal Date
- 30-Mar-2018
- Technical Committee
- CEN/TC 248 - Textiles and textile products
- Drafting Committee
- CEN/TC 248 - Textiles and textile products
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 13-Sep-2017
- Completion Date
- 13-Sep-2017
Overview
EN ISO 1833-11:2017 - part of the ISO 1833 series on textiles - specifies a quantitative chemical analysis method using sulfuric acid to determine the mass percentage of cellulose fibres (after removal of non‑fibrous matter) in textile mixtures. It applies to mixtures of natural and man‑made cellulose fibres (e.g., cotton, flax, hemp, ramie, viscose, cupro, modal, lyocell) with polymers such as polyester, polypropylene, elastomultiester, elastolefin and polypropylene/polyamide bicomponent. The method is internationally adopted (endorsed by CEN) and supersedes earlier editions.
Key Topics and Requirements
- Principle: Dissolve cellulose fibres from a known dry mass of the specimen in ~75% (mass fraction) sulfuric acid; collect, wash, dry and weigh the insoluble residue; calculate cellulose proportion by difference.
- Reagents:
- Sulfuric acid ~75% (acceptable range 73–77%); preparation example given (dilution from concentrated acid).
- Dilute ammonia solution for neutralizing/washing residue.
- Apparatus & Conditions:
- Conical (glass‑stoppered) flask, min. 500 ml.
- Heating to maintain (50 ± 5) °C for the digestion period.
- Test Procedure Highlights:
- Add 200 ml sulfuric acid per gram of dry specimen.
- Maintain at 50 ± 5 °C for 1 hour, with gentle shaking every ~10 minutes.
- Filter, wash successively with cold water and dilute ammonia, dry and weigh residue.
- Allow wash liquids to drain by gravity before applying suction.
- Calculation:
- Follow general calculation rules in ISO 1833‑1; factor d = 1.00 (except propylene/polyamide bicomponent d = 1.01).
- Precision:
- Confidence limits not greater than ±1 percentage point (95% confidence) on homogeneous mixtures.
Applications and Users
- Practical uses:
- Routine fibre composition testing in textile quality control and manufacturing.
- Verification for labeling, trade compliance and material declarations.
- Laboratory analysis for research, product development and material certification.
- Typical users:
- Textile testing laboratories and accredited conformity assessment bodies.
- Textile manufacturers, mill labs and fiber suppliers.
- Regulatory agencies and quality assurance teams concerned with fibre content.
Note: The method involves concentrated sulfuric acid - appropriate chemical handling, ventilation and laboratory safety procedures are required.
Related Standards
- ISO 1833‑1 - General principles of quantitative chemical testing for textiles (normative reference).
- Other parts of the ISO 1833 series address different fibre mixtures and extraction methods; consult the series for complementary procedures.
Relations
- Effective Date
- 08-Jun-2022
- Refers
ISO 1833-1:2006 - Textiles — Quantitative chemical analysis — Part 1: General principles of testing - Effective Date
- 25-Aug-2026
- Effective Date
- 28-Jan-2026
- Referred By
EN 26:2023 - Gas-fired instantaneous water heaters for the production of domestic hot water - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
EN 26:2015 - Gas-fired instantaneous water heaters for the production of domestic hot water - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 12-Feb-2026
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Frequently Asked Questions
EN ISO 1833-11:2017 is a standard published by the European Committee for Standardization (CEN). Its full title is "Textiles - Quantitative chemical analysis - Part 11: Mixtures of certain cellulose fibres with certain other fibres (method using sulfuric acid) (ISO 1833-11:2017)". This standard covers: ISO 1833-11:2017 specifies a method, using sulfuric acid, to determine the mass percentage of cellulose fibres, after removal of non-fibrous matter, in textiles made of mixtures of - natural and man-made cellulose fibres, such as cotton, flax, hemp, ramie, viscose, cupro, modal, lyocell with - polyester, polypropylene, elastomultiester, elastolefin and polypropylene/polyamide bicomponent.
ISO 1833-11:2017 specifies a method, using sulfuric acid, to determine the mass percentage of cellulose fibres, after removal of non-fibrous matter, in textiles made of mixtures of - natural and man-made cellulose fibres, such as cotton, flax, hemp, ramie, viscose, cupro, modal, lyocell with - polyester, polypropylene, elastomultiester, elastolefin and polypropylene/polyamide bicomponent.
EN ISO 1833-11:2017 is classified under the following ICS (International Classification for Standards) categories: 59.060.01 - Textile fibres in general; 59.060.20 - Man-made fibres. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 1833-11:2017 has the following relationships with other standards: It is inter standard links to EN ISO 1833-11:2010, ISO 1833-1:2006, EN 15502-2-1:2022+A1:2023, EN 26:2023, EN 15502-2-1:2022, EN 26:2015, EN 89:2015, ISO 1833-11:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN ISO 1833-11:2017 is associated with the following European legislation: EU Directives/Regulations: 1007/2011; Standardization Mandates: M/532. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN ISO 1833-11:2017 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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Textiles - Quantitative chemical analysis - Part 11: Mixtures of certain cellulose fibres
with certain other fibres (method using sulfuric acid) (ISO 1833-11:2017)
Textilien - Quantitative chemische Analysen - Teil 11: Mischungen bestimmter
Cellulosefasern mit bestimmten anderen Fasern (Schwefelsäure-Verfahren) (ISO 1833-
11:2017)
Textiles - Analyse chimique quantitative - Partie 11: Mélanges de certaines fibres de
cellulose avec certaines autres fibres (méthode à l'acide sulfurique) (ISO 1833-11:2017)
Ta slovenski standard je istoveten z: EN ISO 1833-11:2017
ICS:
59.060.20 Umetna vlakna Man-made fibres
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 1833-11
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 59.060.01 Supersedes EN ISO 1833-11:2010
English Version
Textiles - Quantitative chemical analysis - Part 11:
Mixtures of certain cellulose fibres with certain other
fibres (method using sulfuric acid) (ISO 1833-11:2017)
Textiles - Analyse chimique quantitative - Partie 11: Textilien - Quantitative chemische Analysen - Teil 11:
Mélanges de certaines fibres de cellulose avec certaines Mischungen bestimmter Cellulosefasern mit
autres fibres (méthode à l'acide sulfurique) (ISO 1833- bestimmten anderen Fasern (Schwefelsäure-
11:2017) Verfahren) (ISO 1833-11:2017)
This European Standard was approved by CEN on 22 August 2017.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1833-11:2017 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 1833-11:2017) has been prepared by Technical Committee ISO/TC 48
“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 March 2018, and conflicting national standards shall
be withdrawn at the latest by March 2018.
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 1833-11:2010.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 1833-11:2017 has been approved by CEN as EN ISO 1833-11:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 1833-11
Second edition
2017-08
Textiles — Quantitative chemical
analysis —
Part 11:
Mixtures of certain cellulose fibres
with certain other fibres (method
using sulfuric acid)
Textiles — Analyse chimique quantitative —
Partie 11: Mélanges de certaines fibres de cellulose avec certaines
autres fibres (méthode à l’acide sulfurique)
Reference number
ISO 1833-11:2017(E)
©
ISO 2017
ISO 1833-11:2017(E)
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved
ISO 1833-11:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus .
...