SIST EN 17188:2025
(Main)Materials obtained from End-of-Life Tyres (ELT) - Sampling method for granulates and powders stored in big-bags and small-bags
Materials obtained from End-of-Life Tyres (ELT) - Sampling method for granulates and powders stored in big-bags and small-bags
This document specifies methods for obtaining a sample of rubber granulates or powders derived from end-of-life tyres which have been stored in big-bags and small-bags.
Sample increments at different levels within the bag are obtained, which represent the average particle size distribution within the bag. From these sample increments, a representative sample is derived.
The methods specified in this document are applicable, for example, when the samples are to be tested for e.g. bulk density, durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities.
Materialien aus Altreifen (ELTs) - Probeentnahme für in Big Bags und Small Bags gelagerte Granulate und Mehle
Dieses Dokument legt Verfahren zur Gewinnung einer Probe von Gummigranulat oder -mehlen aus Altreifen fest, die in Big Bags und Small Bags gelagert wurden.
Es werden Einzelproben auf verschiedenen Ebenen innerhalb des Bags entnommen, die die durchschnittliche Partikelgrößenverteilung innerhalb des Bags darstellen. Aus diesen Einzelproben wird eine repräsentative Probe erstellt.
Die in diesem Dokument festgelegten Verfahren sind anwendbar, wenn die Proben z. B. auf Schüttdichte, Beständigkeit, Partikelgrößenverteilung, Feuchtegehalt, Aschegehalt, Schmelzverhalten von Asche, Brennwert, chemische Zusammensetzung sowie Verunreinigungen geprüft werden sollen.
Matériaux obtenus à partir de pneus usagés non réutilisables (PUNR) - Méthode d'échantillonnage de granulats et de poudrettes stockés dans des big-bags et des sacs
Le présent document spécifie des méthodes permettant d’obtenir un échantillon de granulats ou de poudrettes de caoutchouc issus de pneus usagés non réutilisables, qui ont été stockés dans des big-bags et des sacs.
Des prélèvements élémentaires sont recueillis à différents niveaux dans le big-bag, ils représentent la distribution granulométrique moyenne dans le big-bag. Un échantillon représentatif est obtenu à partir de ces prélèvements élémentaires.
Les méthodes spécifiées dans le présent document sont applicables, lorsque les échantillons doivent être soumis à essai notamment pour ce qui concerne la masse volumique apparente, la durabilité, la distribution granulométrique, la teneur en humidité, la teneur en cendres, la fusibilité des cendres, le pouvoir calorifique, la composition chimique, les impuretés.
Snovi iz izrabljenih avtomobilskih gum (ELT) - Metoda vzorčenja granulatov in praškov, shranjenih v velikih in malih vrečah
Ta dokument določa metode za pridobivanje vzorcev granulatov in praškov iz izrabljenih avtomobilskih gum, ki so shranjeni v velikih in majhnih vrečah.
Postopek vzorčenja zajema pridobitev več enot vzorcev na različnih ravneh znotraj vreče, ki predstavljajo povprečno porazdelitev velikosti delcev v vreči. Iz teh enot vzorcev izhaja reprezentativni vzorec.
Metode, ki so opisane v tem standardu, se lahko uporabijo, ko je na primer potrebno preskusiti masno gostoto, odpornost, porazdelitev velikosti delcev, vsebnost vlage, vsebnost pepela, lastnosti pepela pri taljenju, kalorično vrednost, kemično sestavo in nečistoče.
General Information
Relations
Overview
EN 17188:2024 - published by CEN in December 2024 - defines a standardized sampling method for rubber granulates and powders derived from End‑of‑Life Tyres (ELT) stored in big‑bags and small‑bags. The standard specifies how to obtain representative sample increments from different heights/positions within a bag, combine them into a laboratory sample, and document the sampling. It is intended to support reliable testing of bulk density, durability, particle size distribution, moisture, ash (content and melting behaviour), calorific value, chemical composition and impurities.
Key topics and technical requirements
- Sampling principle: Every particle in the lot should have an equal probability of inclusion to ensure representative particle size distribution, accounting for material segregation (fine particles settling toward the bottom).
- Sampling locations: Samples must be taken from at least three different vertical levels within a bag (top, middle, bottom). Two positioning options are described for big‑bags (side positions P1–P6 or centre axis P1–P3).
- Increments and combined sample:
- Big‑bags: each increment should be ≥150 g; combined sample mass ≥450 g.
- Small‑bags: select a minimum of four small‑bags (for pallet deliveries) and take one increment from each so the combined increment is ≥1 L.
- Sampling tool: A lance-style tool with chambers is used; the opening shall be wider than three times the largest expected particle. Tools are designed for piercing the bag fabric and preventing contamination (Annex A gives tool characteristics).
- Apparatus accuracy: Scales used shall be accurate to ±0.1 g.
- Procedure highlights: For small‑bags, the bag is turned on the floor to mix contents, the tool is inserted in the side and withdrawn from the bag centre to collect material across full depth.
- Documentation (sampling scheme): Records must include sampler, place/date, bag identification (serial/lot), mass of laboratory sample, tool volume, increment positions, ELT type (if known), reference to EN 17188, and any incidents or optional operations.
Applications and users
This standard is applicable where representative sampling of ELT-derived granulates and powders is required for quality control, compliance testing, product characterization and research:
- ELT recyclers and processors
- Testing and analytical laboratories
- Product manufacturers using recycled rubber (infill, flooring, asphalt, fuel, etc.)
- Environmental and safety regulators
- Procurement and quality assurance teams verifying supplier consignments
Related standards
- EN 14243‑1 - Definitions related to ELT materials and impurities (normative reference).
- EN 14243‑2:2019 - Sampling criteria for size-reduced ELT materials (clause referenced for process-stage sampling).
- EN 17409:2020 is cited for small‑bag sampling illustration.
Keywords: EN 17188:2024, ELT, end‑of‑life tyres, sampling method, granulates, powders, big‑bags, small‑bags, particle size distribution, sampling tool, representative sample.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Snovi iz izrabljenih avtomobilskih gum (ELT) - Metoda vzorčenja granulatov in
praškov, shranjenih v velikih in malih vrečah
Materials obtained from End-of-Life Tyres (ELT) - Sampling method for granulates and
powders stored in big-bags and small-bags
Materialien aus Altreifen (ELTs) - Probeentnahme für in Big Bags und Small Bags
gelagerte Granulate und Mehle
Matériaux obtenus à partir de pneus usagés non réutilisables (PUNR) - Méthode
d'échantillonnage de granulats et de poudrettes stockés dans des big-bags et des sacs
Ta slovenski standard je istoveten z: EN 17188:2024
ICS:
13.030.50 Recikliranje Recycling
83.160.01 Avtomobilske pnevmatike na Tyres in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17188
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 13.030.50; 83.160.01 Supersedes CEN/TS 17188:2018
English Version
Materials obtained from End-of-Life Tyres (ELT) -
Sampling method for granulates and powders stored in
big-bags and small-bags
Matériaux obtenus à partir de pneus usagés non Materialien aus Altreifen (ELTs) - Probeentnahme für
réutilisables (PUNR) - Méthode d'échantillonnage de in Big Bags und Small Bags gelagerte Granulate und
granulats et de poudrettes stockés dans des big-bags et Mehle
des sacs
This European Standard was approved by CEN on 25 November 2024.
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17188:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Sampling from big-bags . 7
4.1 Principle . 7
4.2 Apparatus . 7
4.2.1 Sampling tool . 7
4.2.2 Scale . 7
4.2.3 Container . 7
4.3 Procedure . 7
5 Sampling from small-bags . 9
5.1 Principle . 9
5.2 Apparatus . 9
5.2.1 Sampling tool . 9
5.2.2 Scale . 9
5.2.3 Container . 9
5.3 Procedure for sampling . 10
5.3.1 Number of increments . 10
5.3.2 Method of sampling . 10
6 Sampling scheme. 11
Annex A (normative) Characteristics of the Sampling tool for big-bags . 12
Annex B (informative) Sample test sheet . 13
Bibliography . 14
European foreword
This document (EN 17188:2024) has been prepared by Technical Committee CEN/TC 366 “Materials
obtained from End-of-Life Tyres (ELT)”, the secretariat of which is held by UNI.
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 2025 and conflicting national standards shall be
withdrawn at the latest by June 2025.
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 CEN/TS 17188:2018.
This document includes the following significant technical changes with respect to
CEN/TS 17188:2018:
— addition of a sampling method for small-bags in the Title and Scope;
— revision of the used terminology to integrate small-bags;
— review of the general structure of the document;
— change in the status of the document from a Technical Specification to a European Standard.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Introduction
Particle size distribution and related parameters are key measurements for product characterization of
size-reduced materials, such as granulates and powders derived from End-of-Life Tyres (ELTs). To
obtain an accurate particle size distribution, a representative sample of the material to be tested will be
taken according to the principle that every particle of the sample that represents the lot will have an
equal probability of being included in the sample.
Sampling criteria to assess characteristics of granulates and powders at different stages of a production
process by size reduction of end-of-life tyres are given in EN 14243-2:2019, Clause 5.
When the lot to be characterized is a big-bag or a small-bag, particular attention is given in order to
obtain a representative sample(s) because of the tendency of the stored material to segregate over time
with the smaller particles settling in the lower part of the bag.
1 Scope
This document specifies methods for obtaining a sample of rubber granulates or powders derived from
end-of-life tyres which have been stored in big-bags and small-bags.
Sample increments at different levels within the bag are obtained, which represent the average particle
size distribution within the bag. From these sample increments, a representative sample is derived.
The methods specified in this document are applicable when the samples are to be tested for e.g. bulk
density, durability, particle size distribution, moisture content, ash content, ash melting behaviour,
calorific value, chemical composition, impurities.
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 14243-1, Materials obtained from end of life
...
Frequently Asked Questions
SIST EN 17188:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Materials obtained from End-of-Life Tyres (ELT) - Sampling method for granulates and powders stored in big-bags and small-bags". This standard covers: This document specifies methods for obtaining a sample of rubber granulates or powders derived from end-of-life tyres which have been stored in big-bags and small-bags. Sample increments at different levels within the bag are obtained, which represent the average particle size distribution within the bag. From these sample increments, a representative sample is derived. The methods specified in this document are applicable, for example, when the samples are to be tested for e.g. bulk density, durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities.
This document specifies methods for obtaining a sample of rubber granulates or powders derived from end-of-life tyres which have been stored in big-bags and small-bags. Sample increments at different levels within the bag are obtained, which represent the average particle size distribution within the bag. From these sample increments, a representative sample is derived. The methods specified in this document are applicable, for example, when the samples are to be tested for e.g. bulk density, durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities.
SIST EN 17188:2025 is classified under the following ICS (International Classification for Standards) categories: 13.030.50 - Recycling; 83.160.01 - Tyres in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 17188:2025 has the following relationships with other standards: It is inter standard links to SIST-TS CEN/TS 17188:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 17188:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
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