SIST EN ISO 16929:2020

SLOVENSKI STANDARD
SIST EN ISO 16929:2020
01-februar-2020
Polimerni materiali - Ugotavljanje stopnje razpada polimernih materialov pri
določenih pogojih kompostiranja v pilotnem merilu (ISO 16929:2019)
Plastics - Determination of the degree of disintegration of plastic materials under defined
composting conditions in a pilot-scale test (ISO 16929:2019)
Kunststoffe - Bestimmung des Zersetzungsgrades von Kunststoffmaterialien unter
festgelegten Bedingungen der Kompostierung mittels einer Technikums-Maßstab-
Prüfung (ISO 16929:2019)
Plastiques - Détermination du degré de désintégration des matériaux plastiques dans
des conditions de compostage définies lors d'un essai à échelle pilote (ISO 16929:2019)
Ta slovenski standard je istoveten z: EN ISO 16929:2019
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 16929:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16929:2020

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SIST EN ISO 16929:2020


EN ISO 16929
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2019
EUROPÄISCHE NORM
ICS 83.080.01
English Version

Plastics - Determination of the degree of disintegration of
plastic materials under defined composting conditions in a
pilot-scale test (ISO 16929:2019)
Plastiques - Détermination du degré de désintégration Kunststoffe - Bestimmung des Zersetzungsgrades von
des matériaux plastiques dans des conditions de Kunststoffmaterialien unter festgelegten Bedingungen
compostage définies lors d'un essai à échelle pilote der Kompostierung mittels einer Technikums-
(ISO 16929:2019) Maßstab-Prüfung (ISO 16929:2019)
This European Standard was approved by CEN on 28 November 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, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16929:2019 E
worldwide for CEN national Members.

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SIST EN ISO 16929:2020
EN ISO 16929:2019 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 16929:2020
EN ISO 16929:2019 (E)
European foreword
This document (EN ISO 16929:2019) 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 June 2020, and conflicting national standards shall be
withdrawn at the latest by June 2020.
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.
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 16929:2019 has been approved by CEN as EN ISO 16929:2019 without any modification.

3

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SIST EN ISO 16929:2020

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SIST EN ISO 16929:2020
INTERNATIONAL ISO
STANDARD 16929
Third edition
2019-10
Plastics — Determination of the
degree of disintegration of plastic
materials under defined composting
conditions in a pilot-scale test
Plastiques — Détermination du degré de désintégration des
matériaux plastiques dans des conditions de compostage définies lors
d'un essai à échelle pilote
Reference number
ISO 16929:2019(E)
©
ISO 2019

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SIST EN ISO 16929:2020
ISO 16929:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
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
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

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SIST EN ISO 16929:2020
ISO 16929:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
6 Test procedure . 4
6.1 Actions before and during incubation . 4
6.1.1 Start-up of the test . 4
6.1.2 Turning . 5
6.1.3 Termination of the test . 5
6.2 Analysis and process control . 6
6.2.1 Start-up of the test . 6
6.2.2 During the test . 7
6.2.3 Termination of the test . 7
7 Calculation . 8
8 Validity of the test . 8
9 Test report . 8
Bibliography .10
© ISO 2019 – All rights reserved iii

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SIST EN ISO 16929:2020
ISO 16929:2019(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 61, Plastics, Subcommittee SC 14,
Environmental aspects.
This third edition cancels and replaces the second edition (ISO 16929:2013), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— in 6.1.1, the minimum amount of biowaste has been changed to 30 kg from 60 kg due to the decreasing
size of composting bins;
— in 6.2.2.3 and Clause 8, the temperature profile has been changed to new conditions adopted to
small bins.
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 2019 – All rights reserved

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SIST EN ISO 16929:2020
ISO 16929:2019(E)

Introduction
The biological treatment of biodegradable plastic materials includes aerobic composting in well-
operated, municipal or industrial biological waste treatment facilities. Determining the degree of
disintegration of plastic materials in a pilot-scale plant is an important step within a test scheme to
evaluate the compostability of such materials.
© ISO 2019 – All rights reserved v

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SIST EN ISO 16929:2020

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SIST EN ISO 16929:2020
INTERNATIONAL STANDARD ISO 16929:2019(E)
Plastics — Determination of the degree of disintegration of
plastic materials under defined composting conditions in a
pilot-scale test
WARNING — Compost can contain potentially pathogenic organisms. Therefore, appropriate
precautions should be taken when handling it.
1 Scope
This document is used to determine the degree of disintegration of plastic materials in a pilot-scale
aerobic composting test under defined conditions. It forms part of an overall scheme for the evaluation
of the compostability of plastics as outlined in ISO 17088.
The test method laid down in this document is also used to determine the influence of the test material
on the composting process and the quality of the compost obtained. It cannot be used to determine
the aerobic biodegradability of a test material. Other methods are available for this (for example, see
ISO 14851, ISO 14852 or ISO 14855-1 and ISO 14855-2).
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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/
3.1
degradation
irreversible process leading to a significant change in the structure of a material, typically characterized
by a loss of properties (e.g. integrity, molecular mass or structure, mechanical strength) and/or by
fragmentation, affected by environmental conditions, proceeding over a period of time and comprising
one or more steps
3.2
biodegradation
degradation (3.1) caused by biological activity especially by enzymatic action leading to a significant
change in the chemical structure of a material
3.3
disintegration
physical breakdown of a material into very small fragments
3.4
compost
organic soil conditioner obtained by biodegradation (3.3) of a mixture principally consisting of various
vegetable residues, occasionally with other organic material, and having a limited mineral content
© ISO 2019 – All rights reserved 1

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SIST EN ISO 16929:2020
ISO 16929:2019(E)

3.5
composting
aerobic process designed to produce compost (3.4)
3.6
compostability
property of a material to be biodegraded in a composting (3.5) process
Note 1 to entry: To claim compostability, it shall have been demonstrated that a material can be biodegraded
and disintegrated in a composting system (as can be shown by standard test methods) and completes its
biodegradation (3.3) during the end-use of the compost. The compost shall meet the relevant quality criteria.
Quality criteria include low content of regulated metals, no ecotoxicity, no obviously distinguishable residues.
3.7
maturity of compost
assignment of the maturity of a compost (3.4) based on the measurement of the maximum temperature
in a self-heating test using Dewar vessels
Note 1 to entry: It is expressed in terms of the so-called “Rottegrad” (see 6.2.3.1).
3.8
total dry solids
amount of solids obtained by taking a known volume of test material or compost (3.4) and drying at
about 105 °C to constant mass
3.9
volatile solids
amount of solids obtained by subtracting the residues of a known volume of test material or compost
(3.4) after incineration at about 550 °C from the total dry solids (3.8) content of the same sample
Note 1 to entry: The volatile solids content is an indication of the amount of organic matter present.
4 Principle
The disintegration test is performed under defined and standardized composting conditions on a pilot-
scale level.
The test material is mixed with fresh biowaste in a precise concentration and introduced into a
defined composting environment. A natural ubiquitous microbial population starts the composting
process spontaneously and the temperature increases. The composting mass is regularly turned over
and mixed. Temperature, pH-value, moisture content and gas composition are regularly monitored.
They should fulfil certain requirements to ensure sufficient and appropriate microbial activity. The
composting process is continued until a fully stabilized compost is obtained. This is usually the case
after 12 weeks.
The compost is visually observed at regular time intervals to detect any adverse effect of the test
material on the composting process. At the end of the test, the maturity of compost is determined, and the
mixture of compost and test material is sieved through 2 mm and 10 mm mesh sieves. The disintegration
of the test material is evaluated based on th
...