FprEN 17428
(Main)Packaging - Determination of the degree of disintegration under simulated home composting conditions
Packaging - Determination of the degree of disintegration under simulated home composting conditions
This document specifies a laboratory scale test method for determining the degree of disintegration of test items when exposed to well-managed home composting conditions by the weight evaluation method (WE method) using sieving and evaluation by weighing.
The test method is not applicable for the determination of the biodegradability of test items under home composting conditions. Additional testing is necessary for making claims concerning the suitability for home composting. This document is not appropriate for claims relating to the suitability for home composting.
This test method is carried out at laboratory scale under controlled conditions. Therefore, it does not reproduce any real home composting conditions, but it is devised to gain information on the potential of the test item to disintegrate sufficiently. A test item that passes this test is assumed to be capable of undergoing full disintegration in a 12 months home composting cycle carried out under well managed conditions. For features of well-managed home composting see EN 17427:2022, Annex E.
Verpackung - Bestimmung des Zersetzungsgrades unter simulierten Heimkompostierungsbedingungen
Dieses Dokument legt ein Prüfverfahren im Labormaßstab zur Bestimmung des Grads der Desintegration von Prüfgegenständen fest, die gut kontrollierten privaten Kompostierungsbedingungen ausgesetzt sind, und zwar durch das Gewichtsbewertungsverfahren (WE-Verfahren) unter Verwendung einer Siebung und einer Bewertung durch Wägung.
Dieses Prüfverfahren ist nicht anwendbar für die Bestimmung der biologischen Abbaubarkeit der Prüfgegenstände unter privaten Kompostierbedingungen. Um Aussagen über die Eignung für die Heimkompostierung treffen zu können, sind zusätzliche Prüfungen erforderlich. Dieses Dokument eignet sich nicht für Ansprüche bzgl. der Eignung für die Heimkompostierung.
Dieses Prüfverfahren wird im Labormaßstab unter kontrollierten Bedingungen durchgeführt. Er bildet also keine realen Bedingungen der Heimkompostierung ab, sondern dient dazu, Informationen über das Potenzial zur ausreichenden Desintegration des Prüfgegenstandes zu erhalten. Bei einem Prüfgegenstand, der diese Prüfung besteht, wird davon ausgegangen, dass er in einem 12 monatigen Heimkompostierungszyklus unter gut kontrollierten Bedingungen eine vollständige Desintegration durchlaufen kann. Zu den Merkmalen einer kontrollierten Heimkompostierung siehe EN 17427:2022, Anhang E.
Emballage - Détermination du degré de désintégration dans des conditions simulées de compostage domestique
Le présent document spécifie une méthode d’essai de laboratoire pour la détermination du degré de désintégration d’articles soumis à essai exposés à des conditions de compostage domestique bien géré par la méthode d’évaluation du poids (méthode EP) utilisant le tamisage et l’évaluation par pesage.
La méthode d’essai ne s’applique pas à la détermination de la biodégradabilité des articles soumis à essai dans des conditions de compostage domestique. Des essais supplémentaires sont nécessaires pour revendiquer l’aptitude au compostage domestique. Le présent document n’est pas adapté aux revendications concernant l’aptitude au compostage domestique.
Cette méthode d’essai est réalisée à l’échelle du laboratoire en conditions contrôlées. Par conséquent, elle ne reproduit pas des conditions réelles de compostage domestique, mais elle est élaborée dans le but d’obtenir des informations sur le potentiel de l’article soumis à essai à se désintégrer suffisamment. Un article soumis à essai réussissant cet essai est présumé capable de subir une désintégration complète en un cycle de compostage domestique de 12 mois réalisé dans des conditions bien gérées. Pour connaître les caractéristiques du compostage domestique bien géré, se reporter à la FprEN 17427:2022, Annexe E.
Embalaža - Določevanje stopnje razkroja v simuliranih pogojih kompostiranja doma
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 17428:2020
01-april-2020
Embalaža - Določevanje stopnje razkroja v simuliranih pogojih kompostiranja
doma
Packaging - Determination of the degree of disintegration under simulated home
composting conditions
Verpackung - Bestimmung des Zersetzungsgrades unter simulierten
Heimkompostierungsbedingungen
Ta slovenski standard je istoveten z: prEN 17428
ICS:
13.030.99 Drugi standardi v zvezi z Other standards related to
odpadki wastes
55.020 Pakiranje in distribucija blaga Packaging and distribution of
na splošno goods in general
oSIST prEN 17428:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 17428:2020
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oSIST prEN 17428:2020
DRAFT
EUROPEAN STANDARD
prEN 17428
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 13.030.99; 55.040
English Version
Packaging - Determination of the degree of disintegration
under simulated home composting conditions
Verpackung - Bestimmung des Zersetzungsgrades
unter simulierten Heimkompostierungsbedingungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 261.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
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. prEN 17428:2020 E
worldwide for CEN national Members.
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oSIST prEN 17428:2020
prEN 17428:2020 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Weight evaluation method (WE Method) . 7
4.1 Principle . 7
4.2 Solid waste test matrix . 7
4.3 Composting reactor . 8
4.4 Procedure. 9
4.4.1 Test material preparation . 9
4.4.2 Start-up of the test . 9
4.4.3 Incubation period . 9
4.5 Chemical analysis . 9
4.6 Termination of the test and measurement of the degree of disintegration . 10
4.7 Calculation of degree of disintegration . 10
4.8 Expression of results . 10
4.9 Validity of the test . 10
4.10 Test report . 10
5 Surface evaluation method (SE Method) . 11
5.1 Principle . 11
5.2 Solid waste test matrix . 11
5.3 Composting reactor . 11
5.4 Procedure. 11
5.4.1 Test material preparation . 11
5.4.2 Start-up of the test . 12
5.4.3 Incubation period . 12
5.5 Chemical analysis . 12
5.6 Termination of the test and measurement of the degree of disintegration . 12
5.7 Calculation of degree of disintegration . 12
5.8 Expression of results . 13
5.9 Validity of the test . 13
5.10 Test report . 13
Annex A (informative) Example of determination of the degree of disintegration using
simplified disintegration test method by means of slide frames . 14
Bibliography . 15
2
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prEN 17428:2020 (E)
European foreword
This document (prEN 17428:2020) has been prepared by Technical Committee CEN/TC 261 “Packaging”,
the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
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prEN 17428:2020 (E)
Introduction
The test method described in this document determines the degree of disintegration of test materials
when exposed to a simulated well-managed home composting environment.
The disintegration of test materials is determined either by means of a weight evaluation method or by
means of a surface evaluation method.
Determining the degree of disintegration of test materials under simulated home composting conditions
is an important step within a test scheme to evaluate test materials such as carrier bags suitable for
treatment in well-managed home composting installations.
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prEN 17428:2020 (E)
1 Scope
This document specifies two methods of determining the degree of disintegration of test materials when
exposed to a well-managed home composting conditions:
— weight evaluation method (WE method) using sieving and evaluation by weighing;
— surface evaluation method (SE method) using photographic slide frames and evaluation by surface
area measurement.
The method is not applicable to the determination of the biodegradability of test materials under home
composting conditions. Additional testing is necessary to be able to claim home compostability.
NOTE 1 The weight evaluation method using minimum 3 replicates is corresponding to the quantitative
1
determination of disintegration, as expressed in prEN 17427 .
NOTE 2 The weight evaluation method using 2 replicates and the surface evaluation method are corresponding
1
to the qualitative determination of disintegration as expressed in prEN 17427 .
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.
EN 13432, Packaging — Requirements for packaging recoverable through composting and
biodegradation — Test scheme and evaluation criteria for the final acceptance of packaging
EN 15933, Sludge, treated biowaste and soil — Determination of pH
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
ISO 10390, Soil quality — Determination of pH
ISO 16929, Plastics — Determination of the degree of disintegration of plastic materials under defined
composting conditions in a pilot-scale test
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 https://www.electropedia.org/
1
These notes could be deleted once prEN 17427 will be updated using the new names of the methods.
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3.1
compost
organic soil conditioner obtained by biodegradation of a mixture consisting principally of vegetable
residues, occasionally with other organic material and having a limited mineral content
[SOURCE: EN ISO 20200:2015 [1], 3.1]
3.2
compostability
ability of a material to be biodegraded in a composting 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
during the end-use of the compost. The compost shall meet the relevant quality criteria. Quality criteria are e.g. low
regulated metal content, no ecotoxicity, no obviously distinguishable residues.
[SOURCE: EN ISO 20200:2015 [1], 3.2]
3.3
composting
aerobic process designed to produce compost
[SOURCE: EN ISO 20200:2015 [1], 3.3]
3.4
home composting
composting process performed by a private individual with the aim of producing compost for his own
use
[SOURCE: prEN 17427:2020 [7], 3.3]
3.5
disintegration
physical breakdown of a material into very small fragments
[SOURCE: EN ISO 20200:2015 [1], 3.4]
3.6
dry mass
mass of a sample measured after drying
Note 1 to entry: Dry mass is expressed as a percentage of the mass of the wet sample.
[SOURCE: EN ISO 20200:2015 [1], 3.5]
3.7
total dry solids
amount of solids obtained by taking a known volume of test material or compost and drying at about
105 °C to constant mass
[SOURCE: EN ISO 20200:2015 [1], 3.8]
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3.8
volatile solids
amount of solids obtained by subtracting the residue obtained from a known volume of test material or
compost after incineration at about 550 °C from the total dry solids content of the same sample
Note 1 to entry: The volatile-solids content is an indication of the amount of organic matter present.
[SOURCE: EN ISO 20200:2015 [1], 3.9]
3.9
well-managed home composting
home composting practice which meets the minimum required conditions to convert biowaste into
compost
Note 1 to entry: See prEN 17427:2020, Annex E.
4 Weight evaluation method (WE Method)
4.1 Principle
The method determines the degree of disintegration of test materials on a laboratory scale test under
conditions simulating well managed an aerobic home composting process. The solid waste test matrix
used consists of a mixture of mature compost taken from a municipal or industrial composting plant,
starch and rabbit food or of a mixture of mature compost taken from a municipal or industrial composting
plant and municipal organic waste.
Pieces of the plastic test material are composted with this prepared solid waste test matrix. The degree
of disintegration is determined after a composting cycle, by sieving the final matrix through a 2 mm sieve
in order to recover the non-disintegrated residues. The reduction in mass of the test sample is considered
as disintegrated material and used to calculate the degree of disintegration.
4.2 Solid waste test matrix
The solid waste test matrix shall consist either
a) of a weight based mixture of 90/1/1 ratio of mature compost of Rottegrad V with a total solids
content of 50 % ± 5 %, chemically unmodified starch and rabbit feed, or
b) of a weight based mixture of 80/20 ratio of mature compost of Rottegrad V with a total solids content
of 50 % ± 5 % and municipal organic waste cut to a grain size of less than 1 cm.
The same amount of chemically unmodified starch and rabbit feed or municipal organic waste may be re-
inoculated once after a minimum test duration of 12 weeks.
NOTE The assignment of a maturity level to compost using the “Rottegrad” scale takes place on the basis of the
determination of the maximum temperature (T ) in a self-heating test using Dewar vessels. The measured
max
maximum temperature after about 2 to 5 days is used to classify the compost as follows:
— Rottegrad I: T > 60 °C (fresh biowaste)
max
— Rottegrad II: T 50,1 °C to 60 °C
max
— Rottegrad III: T 40,1 °C to 50 °C
max
— Rottegrad IV: T 30,1 °C to 40 °C
max
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— Rottegrad V: T ≤ 30 °C (mature compost)
max
For details of the method, see Reference [8].
Well aerated compost from a municipal or industrial aerobic composting plant shall be used as the
inoculum. Sieve the compost using a screen of mesh aperture of minimum 5 mm and maximum 10 mm.
Afterwards remove any inert objects from the screen underflow, such as glass, stones, plastic or metal,
larger than 2 mm manually. It is recommended that compost from a plant composting the organic fraction
of solid municipal waste be used in order to ensure sufficient diversity of microorganisms. The compost
shall not be older than four months.
The rabbit-feed shall be a commercial product based on alfalfa (lucerne) (Medicago sativa) and vegetable
meal. If a product with a different composition is used, the composition shall be given in the test report.
The protein content of the rabbit-feed shall be approximately 15 % and the cellulose content
approximately 20 %.
The pH-value of the as prepared solid waste shall not be below 6. In this case the solid waste shall be
replaced.
4.3 Composting reactor
The preferred composting reactor is a box made of polypropylene or other inert material, having the
following dimensions: 30 cm × 20 cm × 10 cm (l, w, h). The box shall be covered with a lid assuring a tight
seal to avoid excessive evaporation. Additionally, any gap between box and lid may be sealed with
adhesive tape. In the middle of the two 20 cm wide sides, a hole of 5 mm diameter shall be made
approximately 6,5 cm from the bottom of the box. These two holes provide gas exchange between the
inner atmosphere and the outside environment and shall not be blocked.
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