EN ISO 846:2019
(Main)Plastics - Evaluation of the action of microorganisms (ISO 846:2019)
Plastics - Evaluation of the action of microorganisms (ISO 846:2019)
This document specifies methods for determining the deterioration of plastics due to the action of fungi and bacteria and soil microorganisms. The aim is not to determine the biodegradability of plastics or the deterioration of natural fibre composites.
The type and extent of deterioration can be determined by
a) visual examination and/or
b) changes in mass and/or
c) changes in other physical properties.
The tests are applicable to all plastics that have an even surface and that can thus be easily cleaned. The exceptions are porous materials, such as plastic foams.
This document uses the same test fungi as IEC 60068-2-10. The IEC method, which uses so-called "assembled specimens", calls for inoculation of the specimens with a spore suspension, incubation of the inoculated specimens and assessment of the fungal growth as well as any physical attack on the specimens.
The volume of testing and the test strains used depend on the application envisaged for the plastic.
Kunststoffe - Bestimmung der Einwirkung von Mikroorganismen auf Kunststoffe (ISO 846:2019)
Die in diesem Dokument beschriebenen Prüfungen dienen zur Beurteilung des Verhaltens von Kunststoffen gegen Einwirkung bestimmter Pilze und Bakterien sowie der in Erde vorhandenen Mikroorganismen. Das Ziel ist es, nicht die biologische Abbaubarkeit von Kunststoffen oder den Abbau von Naturfaserverbund-werkstoffen zu bestimmen.
Die Art und das Ausmaß der Einwirkung können bestimmt werden:
a) durch eine visuelle Beurteilung und/oder
b) Änderung der Masse und/oder
c) Bestimmung der Änderung anderer physikalischer Eigenschaften.
Diese Prüfungen können auf alle Kunststoffe angewendet werden, die eine allseits geschlossene Oberfläche haben und sich gut reinigen lassen. Ausgeschlossen sind daher poröse Materialien, wie z. B. Schaumstoffe.
Dieses Dokument verwendet die gleichen Prüfpilze wie IEC 60068 2 10. Das IEC Verfahren, bei dem so genannte "zusammengesetzte Prüfkörper" verwendet werden, fordert eine Beimpfung der Prüfkörper mit einer Sporensuspension eines Prüfpilzgemisches, Bebrütung der beimpften Prüfkörper und bewertet den auf¬tretenden Pilzbewuchs ebenso wie mögliche physikalische Eigenschaftsänderungen.
Art und Umfang der vorzunehmenden Prüfungen sowie die zu verwendenden Teststämme hängen von dem vorgesehenen Verwendungszweck der Kunststoffe ab.
Plastiques - Évaluation de l'action des micro-organismes (ISO 846:2019)
Le présent document spécifie des méthodes pour la détermination de la détérioration des plastiques lorsqu'ils sont exposés à l'action des champignons et des bactéries, et à celle des micro-organismes vivant dans le sol. Il n'a pas pour but de déterminer la biodégradabilité des plastiques ou la détérioration des composites en fibres naturelles.
Le type et l'ampleur de la détérioration engendrée peuvent être déterminés:
a) par un examen visuel; et/ou
b) à partir des variations de masse; et/ou
c) à partir des variations d'autres propriétés physiques.
Les essais sont applicables à tous les plastiques ayant une surface plane et qui peuvent, de ce fait, être aisément nettoyés, exception faite des matériaux poreux, tels que les mousses en plastique.
Le présent document utilise les mêmes champignons pour essai que l'IEC 60068‑2‑10. La méthode IEC, qui utilise ce qu'on appelle des «spécimens assemblés», nécessite l'inoculation des éprouvettes avec une suspension de spores, l'incubation des éprouvettes ensemencées et l'évaluation de la croissance fongique ainsi que de l'attaque physique des éprouvettes.
Le volume des essais et les souches d'essai à utiliser dépendront de l'application prévue pour le plastique.
Polimerni materiali - Vrednotenje delovanja mikroorganizmov (ISO 846:2019)
Ta dokument določa metode za ugotavljanje razkroja polimernih materialov zaradi delovanja gliv, bakterij in mikroorganizmov v tleh. Cilj ni ugotavljanje biorazgradljivosti polimernih materialov ali razkroja kompozitov iz naravnih vlaken.
Vrsto in razpon razkroja je mogoče ugotoviti z
a) vizualnim pregledom in/ali
b) spremembo mase in/ali
c) spremembami drugih fizičnih lastnosti.
Preskusi so uporabni za vse polimerne materiale, ki majo enakomerno površino in jih je tako mogoče zlahka čistiti. Izjema so porozni materiali, kot so polimerne pene.
Ta dokument uporablja enake preskusne glive kot standard IEC 60068-2-10. Metoda IEC, ki uporablja tako imenovane »sestavljene primerke«, zahteva inokulacijo primerkov s suspenzijo spor, inkubacijo inokuliranih primerkov ter vrednotenje rasti gliv in morebitnega fizičnega napada na primerke.
Obseg preskušanja in uporabljeni preskusni sevi so odvisni od predvidene uporabe polimernih materialov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2019
1DGRPHãþD
SIST EN ISO 846:1999
Polimerni materiali - Vrednotenje delovanja mikroorganizmov (ISO 846:2019)
Plastics - Evaluation of the action of microorganisms (ISO 846:2019)
Kunststoffe - Bestimmung der Einwirkung von Mikroorganismen auf Kunststoffe (ISO
846:2019)
Plastiques - Évaluation de l'action des micro-organismes (ISO 846:2019)
Ta slovenski standard je istoveten z: EN ISO 846:2019
ICS:
07.100.99 Drugi standardi v zvezi z Other standards related to
mikrobiologijo microbiology
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 846
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2019
EUROPÄISCHE NORM
ICS 07.100.99; 83.080.01 Supersedes EN ISO 846:1997
English Version
Plastics - Evaluation of the action of microorganisms (ISO
846:2019)
Plastiques - Évaluation de l'action des micro- Kunststoffe - Bestimmung der Einwirkung von
organismes (ISO 846:2019) Mikroorganismen auf Kunststoffe (ISO 846:2019)
This European Standard was approved by CEN on 5 March 2019.
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.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 846:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 846:2019) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
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 October 2019, and conflicting national standards shall
be withdrawn at the latest by October 2019.
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 846:1997.
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 846:2019 has been approved by CEN as EN ISO 846:2019 without any modification.
INTERNATIONAL ISO
STANDARD 846
Third edition
2019-03
Plastics — Evaluation of the action of
microorganisms
Plastiques — Évaluation de l'action des micro-organismes
Reference number
ISO 846:2019(E)
©
ISO 2019
ISO 846:2019(E)
© ISO 2019
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ISO 846:2019(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
4.1 General . 2
4.2 Resistance to fungi . 2
4.2.1 Method A: Fungal-growth test . 2
4.2.2 Method B: Determination of fungistatic effects . 2
4.3 Method C: Resistance to bacteria . 3
4.4 Method D: Resistance to microbially active soil (soil-burial test) . 3
4.5 Choice of properties for assessment of biodeterioration . 3
5 Apparatus and materials. 3
5.1 For all tests . 3
5.2 For tests with fungi . . 4
5.3 For tests with bacteria . 6
5.4 For soil-burial tests . 6
6 Test specimens. 7
6.1 Shape and dimensions . 7
6.2 Specimen test series and numbers in each test series. 7
6.2.1 Specimen test series . 7
6.2.2 Numbers in each test series . 8
7 Preparation of specimens . 8
7.1 Cleaning . 8
7.2 Labelling and storage . 8
7.3 Conditioning and weighing . 8
8 Procedures . 9
8.1 Test temperature . 9
8.2 Test methods . 9
8.2.1 General. 9
8.2.2 Fungal-growth test (method A) . 9
8.2.3 Determination of fungistatic effect (method B) .11
8.2.4 Procedure with bacteria (method C) .12
8.2.5 Soil-burial test (method D) .13
9 Assessment .14
9.1 Assessment of fungal growth on the specimens by visual examination (methods A,
B and D) .14
9.2 Evaluation of the test specimens for the determination of changes in mass and/or
in other physical properties .15
9.2.1 Cleaning .15
9.2.2 Change in mass .15
9.2.3 Determination of changes in other physical properties .16
10 Expression of results .16
10.1 General .16
10.2 Visual assessment .16
10.3 Change in mass .16
10.4 Changes in other physical properties .16
11 Accuracy of the measurements .
...
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