EN ISO 11721-2:2003

SLOVENSKI STANDARD
01-december-2003
Tekstilije - Ugotavljanje odpornosti tekstilij, ki vsebujejo celulozo proti
mikroorganizmom - Preskus z zakopavanjem v zemljo - 2. del: Prepoznavanje
dolgotrajne odpornosti apretur proti gnitju
Textiles - Determination of the resistance of cellulose-containing textiles to micro-
organisms - Soil burial test - Part 2: Identification of long-term resistance of a rot
retardant finish (ISO 11721:2003)
Textilien - Bestimmung der Widerstandsfähigkeit zellulosehaltiger Textilien gegen
Mikroorganismen - Erdeingrabetest - Teil 2: Nachweis der Langzeitbeständigkeit einer
verrottungshemmenden Ausrüstung (ISO 11721-2:2003)
Textiles - Détermination de la résistance aux micro-organismes des textiles contenant de
la cellulose - Essai d'enfouissement - Partie 2: Identification de la résistance a long
terme d'un traitement d'imputrescibilité (ISO 11721-2:2003 )
Ta slovenski standard je istoveten z: EN ISO 11721-2:2003
ICS:
07.100.99 Drugi standardi v zvezi z Other standards related to
mikrobiologijo microbiology
59.080.30 Tkanine Textile fabrics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 11721-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2003
ICS 07.100.99; 59.080.30
English version
Textiles - Determination of the resistance of cellulose-containing
textiles to micro-organisms - Soil burial test - Part 2:
Identification of long-term resistance of a rot retardant finish
(ISO 11721:2003)
Textiles - Détermination de la résistance aux micro- Textilien - Bestimmung der Widerstandsfähigkeit
organismes des textiles contenant de la cellulose - Essai zellulosehaltiger Textilien gegen Mikroorganismen -
d'enfouissement - Partie 2: Identification de la résistance à Erdeingrabetest - Teil 2: Nachweis der
long terme d'un traitement d'imputrescibilité (ISO 11721- Langzeitbeständigkeit einer verrottungshemmenden
2:2003 ) Ausrüstung (ISO 11721-2:2003)
This European Standard was approved by CEN on 15 May 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11721-2:2003 E
worldwide for CEN national Members.

Contents Page
Foreword . 3
Introduction . 4
1 Scope. 5
2 Normative references. 5
3 Safety precautions and health hazards to operators . 5
4 Principle . 5
5 Apparatus and reagents . 5
6 Test specimens . 6
7 Leaching procedure. 6
8 Determination of the degradation activity of the test soil. 6
9 Procedure. 6
10 Calculation and expression of results . 7
11 Test report. 7
Foreword
This document (EN ISO 11721-2:2003) has been prepared by Technical Committee CEN/TC 248
“Textiles and textile products”, the secretariat of which is held by BSI, in collaboration with Technical
Committee ISO/TC 38 “Textiles”.
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 2004, and conflicting national standards shall
be withdrawn at the latest by April 2004.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg,
Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United
Kingdom.
Introduction
Cellulose containing textiles are considered as resistant against the attack of microorganisms living in
the soil, provided that their structure, appearance and maximum tensile strength have not been
altered essentially after a soil burial test.
The assessment of damage resistance takes into account the structure, the aspect and the changes
in the maximum tensile strength, compared to untreated specimens of the same material quality. It is
assessed by comparing the relative decrease of maximum tensile strength of buried specimens, with
that of unburied control specimens.
A long-term rot retardant finish or an increased long-term resistance meets with the requirements for
cellulose containing textiles if the maximum tensile strength of a buried specimen, compared with an
unburied specimen, does not decrease by more than 25 %.
The soil burial intervals for long-term retardant finishes take twice the time needed for control
specimens to lose 80 % of their maximum tensile strength. The soil burial intervals for increased long-
term resistant finishes takes four times the time needed for the controls to lose 80 % of their maximum
tensile strength.
1 Scope
This European Standard describes a test procedure for identification of the long-term resist
...