SIST EN ISO 21304-1:2019
(Main)Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 21304-1:2019)
Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 21304-1:2019)
This document establishes a system of designation for thermoplastic PE-UHMW materials, which can be used as the basis for specifications.
For the purposes of this document, PE-UHMW materials are polyethylene materials having a melt mass-flow rate (MFR) of less than 0,1 g/10 min, measured at 190 °C and 21,6 kg load.
NOTE It has been confirmed that the melt volume-flow rate (MVR) is useful for characterizing some PE-UHMW materials (e.g. pipe materials) under the test condition of 230 °C/21,6 kg and bore diameter of die with 3,628 mm (see ISO 21304-2).
The types of PE-UHMW are differentiated from each other by a classification system based on appropriate levels of the designatory properties:
a) viscosity number;
b) elongational stress;
c) Charpy double-notched impact strength;
and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials.
This designation system is applicable to all PE-UHMW homopolymers and to ultra-high-molecular-weight copolymers of ethylene having a content of other 1-olefinic monomers of less than 50 % by mass and a content of non-olefinic monomers with functional groups up to a maximum of 3 % by mass. It applies to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, fillers and other additives.
It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which can be required to specify a material. If such additional properties are required, they are intended to be determined in accordance with the test methods specified in ISO 21304-2, if suitable.
In order to specify a thermoplastic PE-UHMW material to meet particular specifications, the requirements are to be given in data block 5 (see 4.1).
Kunststoffe - Ultrahochmolekulare Polyethylen (PE-UHMW)-Werkstoffe - Teil 1: Bezeichnungssystem und Basis für Spezifikationen (ISO 21304-1:2019)
Dieses Dokument legt ein Bezeichnungssystem für thermoplastische PE UHMW-Werkstoffe fest, das als Grundlage für Spezifikationen verwendet werden kann.
Für die Anwendung dieses Dokuments sind PE UHMW-Werkstoffe Polyethylen-Werkstoffe mit einer Schmelze-Massefließrate (MFR) von weniger als 0,1 g/10 min, gemessen bei 190 °C und einer Last von 21,6 kg.
ANMERKUNG Es wurde bestätigt, dass die Schmelze-Volumenfließrate (MVR) nützlich dafür ist, einige PE UHMW-Werkstoffe (z. B. Rohrwerkstoffe) unter den Prüfbedingungen von 230 °C/21,6 kg und dem Bohrungsdurchmesser des Extrusionswerkzeugs von 3,628 mm (siehe ISO 21304 2) zu charakterisieren.
Die Arten von PE UHMW werden mit Hilfe eines Einteilungssystems voneinander unterschieden, das auf geeigneten Wertebereichen der kennzeichnenden Eigenschaften:
a) Viskositätszahl;
b) Dehnspannung;
c) Charpy-Kerbschlagzähigkeit mit Doppelkerbe;
und Informationen über vorgesehene Anwendung und/oder Verarbeitungsverfahren, wichtige Eigenschaften, Zusatzstoffe, Farbstoffe, Füll- und Verstärkungsstoffe beruht.
Dieses Bezeichnungssystem ist anwendbar für alle PE UHMW-Homopolymere und ultrahochmolekulare Ethylen-Copolymere , die einen Gehalt anderer 1 olefinischer Monomere von weniger als 50 % Massenanteil und einen Gehalt von nicht-olefinischen Monomeren mit Funktionsgruppen bis zu einem Maximum von 3 % Massenanteil haben. Er gilt für gebrauchsfertige Werkstoffe in Form von Pulver, Granulat oder Pellets, die unmodifiziert oder mit Farbstoffen, Füllstoffen und anderen Zusatzstoffen modifiziert sind.
Es ist nicht beabsichtigt zu implizieren, dass Werkstoffe mit gleicher Bezeichnung notwendigerweise das gleiche Leistungsverhalten aufweisen. Dieses Dokument enthält keine technischen Daten, Leistungsangaben oder Daten zu Verarbeitungs¬bedingungen, die zur Spezifikation eines Werkstoffs erforderlich sein können. Wenn solche zusätzlichen Eigenschaften erforderlich sind, sollten sie, soweit geeignet, nach den in ISO 21304 2 festgelegten Prüfver¬fahren bestimmt werden.
Um einen thermoplastischen PE UHMW-Werkstoff festzulegen, der bestimmte Spezifikationen erfüllt, sind die Anforderungen in Daten-Block 5 anzugeben (siehe 4.1).
Plastiques - Matériaux à base de polyéthylène à très haute masse moléculaire (PE-UHMW) pour moulage et extrusion - Partie 1: Système de désignation et base de spécifications (ISO 21304-1:2019)
Le présent document établit un système de désignation des matériaux thermoplastiques en PE-UHMW qui peut être utilisé comme base pour les spécifications.
Pour les besoins du présent document, les matériaux en PE-UHMW sont des matériaux en polyéthylène ayant un indice de fluidité à chaud en masse (MFR) inférieur à 0,1 g/10 min, mesuré à 190 °C et avec une charge de 21,6 kg.
NOTE Il a été confirmé que l'indice de fluidité à chaud en volume (MVR) est utile pour caractériser certains matériaux PE-UHMW (par exemple des matériaux pour tubes) dans des conditions d'essai de 230 °C/21,6 kg et un diamètre de filière de 3,628 mm (voir l'ISO 21304‑2).
Les types de PE-UHMW sont différenciés les uns des autres par un système de classification fondé sur des niveaux appropriés des propriétés de désignation:
a) indice de viscosité;
b) contrainte d'allongement;
c) résistance au choc Charpy avec double entaille;
et des informations sur l'application prévue et/ou la méthode de mise en œuvre, les propriétés importantes, les additifs, les colorants, les charges et les matériaux de renfort.
Le présent système de désignation est applicable à tous les homopolymères du PE-UHMW et aux copolymères éthyléniques à très haute masse moléculaire ayant une teneur en autres monomères 1-oléfiniques inférieure à 50 % en masse et une teneur maximale en monomères non oléfiniques avec des groupes fonctionnels ne dépassant pas 3 % en masse. Il s'applique aux matériaux prêts à l'emploi dans le cadre d'une utilisation normale sous la forme de poudre, granulés ou grains et aux matériaux non modifiés ou modifiés par des colorants, charges et autres additifs.
Le fait que des matériaux aient la même désignation n'implique pas qu'ils présentent nécessairement les mêmes performances. Le présent document ne comporte pas de données sur la conception, la performance ou les conditions de mise en œuvre qui peuvent être exigées pour spécifier un matériau. Si de telles caractéristiques supplémentaires sont nécessaires, elles doivent être déterminées conformément aux méthodes d'essai spécifiées dans l'ISO 21304-2, s'il y a lieu.
Afin de spécifier un matériau thermoplastique en PE-UHMW pour répondre à une spécification particulière, les exigences doivent être codées dans le bloc de données 5 (voir 4.1).
Polimerni materiali - Materiali na osnovi polietilena z ultra visoko molsko maso (PE-UHMW) za oblikovanje in ekstrudiranje - 1. del: Sistem označevanja in podlage za specifikacije (ISO 21304-1:2019)
Ta dokument določa sistem označevanja plastomernih materialov PE-UHMW, ki jih je mogoče uporabiti kot osnovo za specifikacije.
Za namen tega dokumenta so materiali PE-UHMW polietilenski materiali s hitrostjo masnega toka taline (MFR) manj kot 0,1 g/10 min, merjeno pri 190 °C in obremenitvi 21,6 kg.
OPOMBA: Potrjeno je, da je stopnja pretoka taline (MVR) uporabna za karakterizacijo nekaterih materialov PEUHMW (npr. materialov za cevi) pri preskusnih pogojih 230 °C/21,6 kg in premeru izvrtine čeljusti 3,628 mm (glej ISO 21304-2).
Vrste materialov PE-UHMW se ločujejo glede na sistem razvrščanja, ki temelji na ustreznih ravneh označevalnih lastnosti:
a) viskoznostnemu številu;
b) raztezni obremenitvi;
c) zarezni udarni žilavosti po Charpyju;
ter informacijah o predvideni uporabi in/ali metodi obdelave, pomembnih lastnostih, aditivih, barvilih, polnilih in materialih za ojačanje.
Sistem označevanja se uporablja za vse homopolimere PE-UHMW in kopolimere z visoko molekularno težo iz etilena z vsebnostjo drugih 1-olefinskih monomerov, ki je manjša od 50 % (masni delež), in vsebnostjo neolefinskih monomerov s funkcionalnimi skupinami do največ 3 % (masni delež). Uporablja se za materiale v obliki praška, granul ali peletov, pripravljenih za običajno uporabo, nespremenjenih ali spremenjenih z barvili, polnili in drugimi aditivi.
Materiali z enako oznako nimajo nujno tudi enakih lastnosti. Ta dokument ne podaja inženirskih podatkov, podatkov o delovanju ali podatkov o
pogojih obdelave, ki so mogoče potrebni za določitev materiala. Če so take dodatne lastnosti zahtevane, se določijo v skladu s preskusnimi metodami iz standarda ISO 21304-2, če je to primerno.
Da bi se določil plastomerni material PE-UHMW, ki ustreza določenim specifikacijam, se v podatkovnem bloku 5 navedejo dodatne zahteve (glej točko 4.1).
General Information
- Status
- Published
- Public Enquiry End Date
- 11-Sep-2017
- Publication Date
- 09-May-2019
- Technical Committee
- IPMA - Polimer materials and products
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 25-Apr-2019
- Due Date
- 30-Jun-2019
- Completion Date
- 10-May-2019
Relations
- Effective Date
- 24-Apr-2019
- Effective Date
- 30-Dec-2015
Overview
EN ISO 21304-1:2019 - Plastics - Ultra-high-molecular-weight polyethylene (PE‑UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications, establishes a standardized designation system for PE‑UHMW materials that can be used as the basis for material specifications. It applies to PE‑UHMW with a melt mass‑flow rate (MFR) < 0.1 g/10 min (190 °C, 21.6 kg). The document defines how to identify material type, fillers, processing intent and key designatory properties, while noting that engineering/performance and processing data are provided in companion documents (notably ISO 21304‑2).
Key topics and requirements
- Scope and applicability: Covers PE‑UHMW homopolymers and ultra‑high‑molecular‑weight copolymers of ethylene with <50 % 1‑olefinic comonomer content and ≤3 % non‑olefinic monomers by mass. Applies to powders, granules and pellets, neat or modified with additives, colorants, fillers and reinforcements.
- MFR definition: PE‑UHMW is defined by MFR < 0.1 g/10 min measured at 190 °C / 21.6 kg. A note highlights the usefulness of MVR (e.g., 230 °C / 21.6 kg, 3.628 mm die) for some PE‑UHMW grades (see ISO 21304‑2).
- Designation structure: A standardized pattern comprising an identity block and an individual‑item block subdivided into five data blocks:
- Data block 1: Identification symbol PE‑UHMW (ISO 1043‑1).
- Data block 2: Fillers/reinforcement codes, form and nominal content.
- Data block 3: Intended application or processing method plus supplementary information.
- Data block 4: Designatory properties - viscosity number, elongational stress and Charpy double‑notched impact strength.
- Data block 5: Specification‑level requirements (used to create formal specifications).
- Test and reference linkage: The standard does not supply engineering or processing parameters; where additional properties are required they are to be determined using methods in ISO 21304‑2 and referenced standards such as ISO 1628‑3 and ISO 1043‑1.
Applications and who uses it
- Material manufacturers and compounders: to label and communicate PE‑UHMW product families consistently.
- Product designers and OEMs (machinery, medical implants, piping, wear parts): to select materials with appropriate designation properties.
- Procurement and quality engineers: to write unambiguous specifications and verify supplier conformity.
- Testing laboratories and standards bodies: to map test results to the standardized designation for classification and certification.
Related standards
- ISO 21304‑2 - test specimen preparation and property determination (companion part)
- ISO 1043‑1 - polymer identification symbols
- ISO 1628‑3 - viscosity number for polyethylenes
- EN ISO 11542‑1:2001 (superseded by EN ISO 21304‑1:2019)
EN ISO 21304‑1:2019 provides a clear, interoperable framework for classifying PE‑UHMW grades and forming the basis of specifications - essential for consistent material selection, procurement and regulatory documentation in industries using ultra‑high‑molecular‑weight polyethylene.
Frequently Asked Questions
SIST EN ISO 21304-1:2019 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion materials - Part 1: Designation system and basis for specifications (ISO 21304-1:2019)". This standard covers: This document establishes a system of designation for thermoplastic PE-UHMW materials, which can be used as the basis for specifications. For the purposes of this document, PE-UHMW materials are polyethylene materials having a melt mass-flow rate (MFR) of less than 0,1 g/10 min, measured at 190 °C and 21,6 kg load. NOTE It has been confirmed that the melt volume-flow rate (MVR) is useful for characterizing some PE-UHMW materials (e.g. pipe materials) under the test condition of 230 °C/21,6 kg and bore diameter of die with 3,628 mm (see ISO 21304-2). The types of PE-UHMW are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) viscosity number; b) elongational stress; c) Charpy double-notched impact strength; and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials. This designation system is applicable to all PE-UHMW homopolymers and to ultra-high-molecular-weight copolymers of ethylene having a content of other 1-olefinic monomers of less than 50 % by mass and a content of non-olefinic monomers with functional groups up to a maximum of 3 % by mass. It applies to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, fillers and other additives. It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which can be required to specify a material. If such additional properties are required, they are intended to be determined in accordance with the test methods specified in ISO 21304-2, if suitable. In order to specify a thermoplastic PE-UHMW material to meet particular specifications, the requirements are to be given in data block 5 (see 4.1).
This document establishes a system of designation for thermoplastic PE-UHMW materials, which can be used as the basis for specifications. For the purposes of this document, PE-UHMW materials are polyethylene materials having a melt mass-flow rate (MFR) of less than 0,1 g/10 min, measured at 190 °C and 21,6 kg load. NOTE It has been confirmed that the melt volume-flow rate (MVR) is useful for characterizing some PE-UHMW materials (e.g. pipe materials) under the test condition of 230 °C/21,6 kg and bore diameter of die with 3,628 mm (see ISO 21304-2). The types of PE-UHMW are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) viscosity number; b) elongational stress; c) Charpy double-notched impact strength; and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials. This designation system is applicable to all PE-UHMW homopolymers and to ultra-high-molecular-weight copolymers of ethylene having a content of other 1-olefinic monomers of less than 50 % by mass and a content of non-olefinic monomers with functional groups up to a maximum of 3 % by mass. It applies to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, fillers and other additives. It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which can be required to specify a material. If such additional properties are required, they are intended to be determined in accordance with the test methods specified in ISO 21304-2, if suitable. In order to specify a thermoplastic PE-UHMW material to meet particular specifications, the requirements are to be given in data block 5 (see 4.1).
SIST EN ISO 21304-1:2019 is classified under the following ICS (International Classification for Standards) categories: 83.080.20 - Thermoplastic materials. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 21304-1:2019 has the following relationships with other standards: It is inter standard links to SIST EN ISO 11542-1:2001, SIST EN ISO 11542-1:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 21304-1:2019 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2019
Nadomešča:
SIST EN ISO 11542-1:2001
Polimerni materiali - Materiali na osnovi polietilena z ultra visoko molsko maso
(PE-UHMW) za oblikovanje in ekstrudiranje - 1. del: Sistem označevanja in podlage
za specifikacije (ISO 21304-1:2019)
Plastics - Ultra-high-molecular-weight polyethylene (PE-UHMW) moulding and extrusion
materials - Part 1: Designation system and basis for specifications (ISO 21304-1:2019)
Kunststoffe - Ultrahochmolekulare Polyethylen (PE-UHMW)-Werkstoffe - Teil 1:
Bezeichnungssystem und Basis für Spezifikationen (ISO 21304-1:2019)
Plastiques - Matériaux à base de polyéthylène à très haute masse moléculaire (PE-
UHMW) pour moulage et extrusion - Partie 1: Système de désignation et base de
spécifications (ISO 21304-1:2019)
Ta slovenski standard je istoveten z: EN ISO 21304-1:2019
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21304-1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2019
EUROPÄISCHE NORM
ICS 83.080.20 Supersedes EN ISO 11542-1:2001
English Version
Plastics - Ultra-high-molecular-weight polyethylene (PE-
UHMW) moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO
21304-1:2019)
Plastiques - Matériaux à base de polyéthylène à très Kunststoffe - Ultrahochmolekulare Polyethylen (PE-
haute masse moléculaire (PE-UHMW) pour moulage et UHMW)-Werkstoffe - Teil 1: Bezeichnungssystem und
extrusion - Partie 1: Système de désignation et base de Basis für Spezifikationen (ISO 21304-1:2019)
spécifications (ISO 21304-1:2019)
This European Standard was approved by CEN on 16 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.
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 21304-1:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 21304-1:2019) 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 11542-1:2001.
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 21304-1:2019 has been approved by CEN as EN ISO 21304-1:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 21304-1
First edition
2019-03
Plastics — Ultra-high-molecular-
weight polyethylene (PE-UHMW)
moulding and extrusion materials —
Part 1:
Designation system and basis for
specifications
Plastiques — Matériaux à base de polyéthylène à très haute masse
moléculaire (PE-UHMW) pour moulage et extrusion —
Partie 1: Système de désignation et base de spécifications
Reference number
ISO 21304-1:2019(E)
©
ISO 2019
ISO 21304-1:2019(E)
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2019 – All rights reserved
ISO 21304-1:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Designation system . 2
4.1 General . 2
4.2 Data block 1 . 2
4.3 Data block 2 . 3
4.4 Data block 3 . 3
4.5 Data block 4 . 4
4.5.1 General. 4
4.5.2 Viscosity number . 4
4.5.3 Elongational stress . 5
4.5.4 Charpy double-notched impact strength . 5
4.6 Data block 5 . 5
5 Examples of designations . 6
5.1 Designation only . 6
5.2 Designation transformed into a specification . 7
Bibliography . 8
ISO 21304-1:2019(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 9,
Thermoplastic materials.
This first edition of ISO 21304-1 cancels and replaces ISO 11542-1:2001, which has been technically
revised to introduce a new designation system.
The revised designation system is published under a new ISO number, as many existing documents
refer to ISO 11542-1. If the existing ISO 11542-1 would be replaced by the new designation system,
these documents would refer to the incorrect designation system.
The new designation system according to ISO 21304-1 is intended to replace gradually any designation
system according to ISO 11542-1.
During this perio
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