ISO 19983:2024

Rubber — Determination of precision of test methods

This document provides guidelines and specifies requirements for estimating the precision of rubber test methods by means of interlaboratory test programmes based on the procedures given in: — Method A using ISO 5725-1, ISO 5725-2 and ISO 5725-3; — Method B using ASTM D4483.

Caoutchouc — Détermination de la fidélité des méthodes d'essai

Le présent document fournit des lignes directrices et spécifie des exigences pour évaluer la fidélité des méthodes d'essai de caoutchouc basés sur les modes opératoires données dans: — Méthode A selon les ISO 5725-1, ISO 5725-2 et ISO 5725-3; — Méthode B selon l’ASTM D4483.

General Information

• Status: Published
• Publication Date: 24-Jun-2024
• ICS: 83.060 - Rubber
• Technical Committee: ISO/TC 45/SC 2 - Testing and analysis
• Drafting Committee: ISO/TC 45/SC 2 - Testing and analysis
• Current Stage: 6060 - International Standard published
• Start Date: 25-Jun-2024
• Due Date: 20-Feb-2025
• Completion Date: 25-Jun-2024

Relations

• Revises: ISO 19983:2022 - Rubber — Determination of precision of test methods
• Effective Date: 25-Feb-2023

Standards Content (Sample)

International
Standard
ISO 19983
Third edition
Rubber — Determination of
2024-06
precision of test methods
Caoutchouc — Détermination de la fidélité des méthodes d'essai
Reference number
© ISO 2024
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Interlaboratory test programme . 3
6 Procedures . 3
6.1 Application .3
6.2 Repeatability conditions .4
6.3 Day-to-day repeatability conditions .4
6.4 Reproducibility conditions .4
6.5 Testing elements .4
6.6 Planning .4
6.7 Methodology .5
6.7.1 Method A . . .5
6.7.2 Method B . .5
6.7.3 Method A versus Method B — Day-to-day repeatability value.6
6.7.4 Method A versus Method B — Number of replicates .6
6.8 Detection of outliers .6
6.9 Treatment of outliers .6
7 Report . 8
Annex A (normative) Calculations for Method A . 9
Annex B (normative) Calculations for Method B .12
Annex C (normative) Calculating the h and k values (Mandel's statistics) .13
Annex D (informative) Example of general precision determination .15
Annex E (informative) Guidance for using precision results .20
Annex F (informative) Example of outlier treatment for Method A .22
Annex G (informative) An example of outlier treatment for Method B .28
Bibliography .37

iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 45, Rubber and rubber products, Subcommittee
SC 2, Testing and analysis.
This third edition cancels and replaces the second edition (ISO 19983:2022), which has been technically
revised.
The main changes are as follows:
— Annex F has been modified to provide an example of outlier treatment for Method A;
— previous Annex F has been changed to Annex G;
— a comparison of Method A and Method B is shown in 6.7.3 and 6.7.4.
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
Introduction
The procedures used for several years for estimating precision of test methods by means of interlaboratory
1)
tests (ISO/TR 9272 ) were closely related to ASTM D4483. ISO/TR 9272 was found to have serious flaws
which users were using work-arounds to counteract. This document has therefore been developed to
replace ISO/TR 9272 and includes using ISO 5725-1 and ISO 5725-2 with specific choices and variations of
procedures to suit the particular requirements of rubbers.
This document provides two methods for determining the precision values of a test method:
— Method A based on ISO 5725-1, ISO 5725-2 and ISO 5725-3 to calculate repeatability, day-to-day
repeatability, and reproducibility;
— Method B based on ASTM D4483 to calculate day-to-day repeatability and reproducibility.
1) Cancelled and replaced by ISO 19983:2017.

v
International Standard ISO 19983:2024(en)
Rubber — Determination of precision of test methods
1 Scope
This document provides guidelines and specifies requirements for estimating the precision of rubber test
methods by means of interlaboratory test programmes based on the procedures given in:
— Method A using ISO 5725-1, ISO 5725-2 and ISO 5725-3;
— Method B using ASTM D4483.
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.
ISO 3534-1, Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in
probability
ISO 3534-2, Statistics — Vocabulary and symbols — Part 2: Applied statistics
ISO 5725-1:2023, Accuracy (trueness and precision) of measurement methods and results — Part 1: General
principles and definitions
ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for
the determination of repeatability and reproducibility of a standard measurement method
ISO 5725-3, Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate
measures of the precision of a standard measurement method
ASTM D4483, Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon
Black Industries
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3534-1, ISO 3534-2, ISO 5725-1,
ISO 5725-2, ISO 5725-3, ASTM D4483, and the following apply.
ISO and IEC maintain terminology 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/
3.1
day-to-day repeatability
precision under the conditions where independent test results are obtained with the same method on
identical test items in the same laboratory by the same operator using the same equipment
Note 1 to entry: The time interval between repeated tests is normally between one and seven days.

3.2
type 1 precision
precision determined directly on a target material
Note 1 to entry: Prepared test pieces or test portions of the target material (class of elements) drawn from a
homogeneous source are tested, with no processing or other operations required prior to testing.
3.3
type 2 precision
precision determined indirectly for a target material
Note 1 to entry: The target material is usually combined with a number of homogeneous ancillary materials to form
a composite material and testing is conducted on samples of this and the property response of the target material is
determined.
3.4
pooled standard deviation
square root of the average variance of a set of selected individual variances
Note 1 to entry: The pooled standard deviation, as well as the average variance, is intended as an overall or general
descriptor of some set of variances and their standard deviations.
4 Symbols
D day-to-day effect, the day-to-day variance component of which is σ
ij D
h values Mandel’s between-laboratory consistency test statistic
k values Mandel’s within-laboratory consistency test statistic
L between-laboratory effect, the between-laboratory variance component of which is σ
i L
M repeatability effect, the repeatability variance component of which is σ
ijk M
n number of measurements
p number of laboratories
q number of days
r repeatability
r day-to-day repeatability as determined from method A calculations
DA
r day-to-day repeatability as de
...

Norme
internationale
ISO 19983
Troisième édition
Caoutchouc — Détermination de la
2024-06
fidélité des méthodes d'essai
Rubber — Determination of precision of test methods
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Symboles . 2
5 Programme d’essais interlaboratoires . 3
6 Mode opératoire . 3
6.1 Application .3
6.2 Conditions de répétabilité .4
6.3 Conditions de répétabilité ordinaire .4
6.4 Conditions de reproductibilité .4
6.5 Éléments d’essai .4
6.6 Planning .4
6.7 Méthodologie . .5
6.7.1 Méthode A .5
6.7.2 Méthode B .6
6.7.3 Méthode A comparée à Méthode B — Valeur de répétabilité ordinaire .6
6.7.4 Méthode A comparée à Méthode B — Nombre de répétitions .6
6.8 Détection des valeurs aberrantes .6
6.9 Traitement des valeurs aberrantes .7
7 Rapport . 8
Annexe A (normative) Calculs pour la Méthode A . 10
Annexe B (normative) Calculs pour la méthode B .13
Annexe C (normative) Calcul des valeurs h et k (statistiques de Mandel). 14
Annexe D (informative) Exemple de détermination générale de fidélité .16
Annexe E (informative) Indications pour l’utilisation des résultats de fidélité .21
Annexe F (informative) Un exemple de traitement des valeurs aberrantes pour la Méthode A .23
Annexe G (informative) Exemple de traitement des valeurs aberrantes pour la Méthode B .29
Bibliographie .39

iii
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant les
références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de l'élaboration du
document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de brevets reçues par l'ISO
(voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 45, Élastomères et produits à base
d'élastomères, sous-comité SC 2, Essais et analyses.
Cette troisième édition annule et remplace la seconde édition (ISO 19983:2022), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— l'Annexe F a été modifié afin de fournir un exemple de traitement des valeurs aberrantes pour la
Méthode A;
— l'ancienne Annexe F a été remplacée par l'Annexe G;
— une comparaison entre la Méthode A et la Méthode B est présentée aux 6.7.3 et 6.7.4.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.

iv
Introduction
Les modes opératoires utilisés depuis plusieurs années pour estimer la fidélité des méthodes d'essai au
1)
moyen d’essais interlaboratoires (ISO/TR 9272 ) étaient très proches de ceux de l’ASTM D4483. Il s’est avéré
que l’ISO/TR 9272 présentait des défauts importants que les utilisateurs étaient habitués à contourner. Le
présent document a donc été élaboré pour remplacer l'ISO/TR 9272 et intègre l'utilisation de l'ISO 5725-1
et de l'ISO 5725-2 avec des choix spécifiques et des variations de modes opératoires pour répondre aux
exigences particulières des caoutchoucs.
Le présent document fournit deux méthodes pour déterminer les valeurs de précision d'une méthode d'essai:
— Méthode A basée sur les ISO 5725-1, ISO 5725-2 et ISO 5725-3 pour calculer la répétabilité, la répétabilité
ordinaire et la reproductibilité;
— Méthode B basée sur l’ASTM D4483 pour calculer la répétabilité ordinaire et la reproductibilité.
1) Annulé et remplacé par l'ISO 19983:2017.

v
Norme internationale ISO 19983:2024(fr)
Caoutchouc — Détermination de la fidélité des méthodes d'essai
1 Domaine d’application
Le présent document fournit des lignes directrices et spécifie des exigences pour évaluer la fidélité des
méthodes d'essai de caoutchouc basés sur les modes opératoires données dans:
— Méthode A selon les ISO 5725-1, ISO 5725-2 et ISO 5725-3;
— Méthode B selon l’ASTM D4483.
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie de leur
contenu, des exigences du présent document. Pour les références datées, seule l’édition citée s’applique. Pour
les références non datées, la dernière édition du document de référence s'applique (y compris les éventuels
amendements).
ISO 3534-1, Statistique — Vocabulaire et symboles — Partie 1: Termes statistiques généraux et termes utilisés
en calcul des probabilités
ISO 3534-2, Statistique — Vocabulaire et symboles — Partie 2: Statistique appliquée
ISO 5725-1:2023, Exactitude (justesse et fidélité) des résultats et méthodes de mesure — Partie 1: Principes
généraux et définitions
ISO 5725-2, Exactitude (justesse et fidélité) des résultats et méthodes de mesure — Partie 2: Méthode de base
pour la détermination de la répétabilité et de la reproductibilité d'une méthode de mesure normalisée
ISO 5725-3, Exactitude (justesse et fidélité) des résultats et méthodes de mesure — Partie 3: Fidélité
intermédiaire et plans alternatifs pour les études collaboratives
ASTM D4483, Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon
Black Industries
3 Termes et définitions
Pour les besoins du présent document, les termes et les définitions de l'ISO 3534-1, l'ISO 3534-2, l'ISO 5725-1,
l'ISO 5725-2, l'ISO 5725-3, l’ASTM D4483 ainsi que les suivants s’appliquent.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en normalisation,
consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse https:// www .iso .org/ obp
— IEC Electropedia: disponible à l’adresse https:// www .electropedia .org/
3.1
répétabilité ordinaire
fidélité dans les conditions où des résultats d'essais indépendants sont obtenus avec la même méthode sur
des éléments d'essai identiques dans le même laboratoire, par le même opérateur utilisant le même matériel
Note 1 à l'article: Le délai entre des essais répétés est normalement compris entre un et sept jours.

3.2
fidélité de type 1
fidélité déterminée directement sur un matériau cible
Note 1 à l'article: Des éprouvettes ou prises d'essai préparées à partir du matériau cible (classe d'éléments) issu d'une
source homogène sont soumises à essais, sans mise en œuvre ou autres traitements nécessaires avant essai.
3.3
fidélité de type 2
fidélité déterminée indirectement pour un matériau cible
Note 1 à l'article: Le matériau cible est généralement combiné avec un certain nombre de matériaux homogènes
auxiliaires pour former un matériau composite et des essais sont réalisés sur des échantillons de celui-ci et la réponse
de la caractéristique du matériau de la cible est déterminée.
3.4
écart-type groupé
racine carrée de la variance moyenne d'un ensemble de variances individuelles déterminées
Note 1 à l'article: L'écart-type groupé, tout comme la variance moyenne, est destiné à servir de descripteur global ou
général d'un ensemble de variances et de leurs écarts-types.
4 Symboles
D effet journalier,
...

FINAL DRAFT
International
Standard
ISO/FDIS 19983
ISO/TC 45/SC 2
Rubber — Determination of
Secretariat: JISC
precision of test methods
Voting begins on:
Caoutchouc — Détermination de la fidélité des méthodes d'essai 2024-04-01
Voting terminates on:
2024-05-27
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 19983:2024(en) © ISO 2024

FINAL DRAFT
ISO/FDIS 19983:2024(en)
International
Standard
ISO/FDIS 19983
ISO/TC 45/SC 2
Rubber — Determination of
Secretariat: JISC
precision of test methods
Voting begins on:
Caoutchouc — Détermination de la fidélité des méthodes d'essai
Voting terminates on:
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 SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 19983:2024(en) © ISO 2024

ii
ISO/FDIS 19983:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Interlaboratory test programme . 3
6 Procedures . 3
6.1 Application .3
6.2 Repeatability conditions .4
6.3 Day-to-day repeatability conditions .4
6.4 Reproducibility conditions .4
6.5 Testing elements .4
6.6 Planning .4
6.7 Methodology .5
6.7.1 Method A . . .5
6.7.2 Method B . .5
6.7.3 Method A versus Method B — Day-to-day repeatability value.6
6.7.4 Method A versus Method B — Number of replicates .6
6.8 Detection of outliers .6
6.9 Treatment of outliers .6
7 Report . 8
Annex A (normative) Calculations for Method A . 9
Annex B (normative) Calculations for Method B .12
Annex C (normative) Calculating the h and k values (Mandel's statistics) .13
Annex D (informative) Example of general precision determination .15
Annex E (informative) Guidance for using precision results .20
Annex F (informative) Example of outlier treatment for Method A .22
Annex G (informative) An example of outlier treatment for Method B .28
Bibliography .37

iii
ISO/FDIS 19983:2024(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 45, Rubber and rubber products, Subcommittee
SC 2, Testing and analysis.
This third edition cancels and replaces the second edition (ISO 19983:2022), which has been technically
revised.
The main changes are as follows:
— Annex F has been modified to provide an example of outlier treatment for Method A;
— previous Annex F has been changed to Annex G;
— a comparison of Method A and Method B is shown in 6.7.3 and 6.7.4.
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/FDIS 19983:2024(en)
Introduction
The procedures used for several years for estimating precision of test methods by means of interlaboratory
1)
tests (ISO/TR 9272 ) were closely related to ASTM D4483. ISO/TR 9272 was found to have serious flaws
which users were using work-arounds to counteract. This document has therefore been developed to
replace ISO/TR 9272 and includes using ISO 5725-1 and ISO 5725-2 with specific choices and variations of
procedures to suit the particular requirements of rubbers.
This document provides two methods for determining the precision values of a test method:
— Method A based on ISO 5725-1, ISO 5725-2 and ISO 5725-3 to calculate repeatability, day-to-day
repeatability, and reproducibility;
— Method B based on ASTM D4483 to calculate day-to-day repeatability and reproducibility.
1) Cancelled and replaced by ISO 19983:2017.

v
FINAL DRAFT International Standard ISO/FDIS 19983:2024(en)
Rubber — Determination of precision of test methods
1 Scope
This document provides guidelines and specifies requirements for estimating the precision of rubber test
methods by means of interlaboratory test programmes based on the procedures given in:
— Method A using ISO 5725-1, ISO 5725-2 and ISO 5725-3;
— Method B using ASTM D4483.
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.
ISO 3534-1, Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in
probability
ISO 3534-2, Statistics — Vocabulary and symbols — Part 2: Applied statistics
ISO 5725-1:2023, Accuracy (trueness and precision) of measurement methods and results — Part 1: General
principles and definitions
ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for
the determination of repeatability and reproducibility of a standard measurement method
ISO 5725-3, Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate
measures of the precision of a standard measurement method
ASTM D4483, Standard Practice for Determining Precision for Test Method Standards in the Rubber and Carbon
Black Industries
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3534-1, ISO 3534-2, ISO 5725-1,
ISO 5725-2, ISO 5725-3, ASTM D4483, and the following apply.
ISO and IEC maintain terminology 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/
3.1
day-to-day repeatability
precision under the conditions where independent test results are obtained with the same method on
identical test items in the same laboratory by the same operator using the same equipment
Note 1 to entry: The time interval between repeated tests is normally between one and seven days.

ISO/FDIS 19983:2024(en)
3.2
type 1 precision
precision determined directly on a target material
N
...

ISO/FDIS 19983:20232024(E)
ISO TC 45/SC 2
2023-12 2024-03-15
Secretariat: JISC
Rubber — Determination of precision of test methods
Caoutchouc — Détermination de la fidélité des méthodes d'essai

ISO/DISFDIS 19983:20232024(E)
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 20232024 – All rights reserved

ISO/DISFDIS 19983:20232024(E)
Contents
Foreword . Error! Bookmark not defined.
Introduction . Error! Bookmark not defined.
1 Scope . Error! Bookmark not defined.
2 Normative references . Error! Bookmark not defined.
3 Terms and definitions . Error! Bookmark not defined.
4 Symbols . Error! Bookmark not defined.
5 Interlaboratory test programme . Error! Bookmark not defined.
6 Procedures. Error! Bookmark not defined.
6.1 Application . Error! Bookmark not defined.
6.2 Repeatability conditions . Error! Bookmark not defined.
6.3 Day-to-day repeatability conditions . Error! Bookmark not defined.
6.4 Reproducibility conditions . Error! Bookmark not defined.
6.5 Testing elements. Error! Bookmark not defined.
6.6 Planning . Error! Bookmark not defined.
6.7 Methodology . Error! Bookmark not defined.
6.7.1 Method A . Error! Bookmark not defined.
6.7.2 Method B . Error! Bookmark not defined.
6.7.3 Method A vs Method B — Day-to-day repeatability value . Error! Bookmark not defined.
6.7.4 Method A vs Method B — Number of replicates . Error! Bookmark not defined.
6.8 Detection of outliers . Error! Bookmark not defined.
6.9 Treatment of outliers . Error! Bookmark not defined.
7 Report . Error! Bookmark not defined.
Annex A (normative) Calculations for Method A . Error! Bookmark not defined.
Annex B (normative) Calculations for Method B . Error! Bookmark not defined.
Annex C (normative) Calculating the h and k values (Mandel's statistics) Error! Bookmark not
defined.
Annex D (informative) Example of general precision determination . Error! Bookmark not
defined.
Annex E (informative) Guidance for using precision results . Error! Bookmark not defined.
Annex F (informative) Example of outlier treatment for Method A . Error! Bookmark not
defined.
Annex G (informative) An example of outlier treatment for Method B . Error! Bookmark not
defined.
Bibliography . Error! Bookmark not defined.
ISO/DISFDIS 19983:20232024(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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of
(a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice
of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for
identifying any or all such patent rights.
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 45, Rubber and rubber products,
Subcommittee SC 2, Testing and analysis.
This third edition cancels and replaces the second edition (ISO 19983:2022), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— A new Annex F  has been addedmodified to provide an example of outlier treatment for Method A.;
— A— previous Annex F has been changed to Annex G;
— a comparison of Method A and Method B is shown in 6.7.3 and 6.7.4.
― Annex F at DIS stage was changed to Annex G
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 20232024 – All rights reserved

ISO/DISFDIS 19983:20232024(E)
Introduction
The procedures used for several years by ISO/TC 45/SC 2 for estimating precision of test methods by
means of interlaboratory tests (ISO/TR 9272 ) were closely related to ASTM D4483. ISO/TR 9272 was
found to have serious flaws which users were using work-arounds to counteract. It was the desire of the
ISO TC 45/SC2/WG4 members thatThis document has therefore been developed to replace ISO/TR 9272
be replaced with a new standard that includedand includes using ISO 5725 (all parts)-1 and ISO 5725-2
with specific choices and variations of procedures to suit the particular requirements of rubbers.
This document provides two methods for determining the precision values of a test method:
— Method A based on ISO 5725 (all parts) 5725-1, ISO 5725-2 and ISO 5725-3 to calculate repeatability,
day-to-day repeatability, and reproducibility;
— Method B based on ASTM D4483 to calculate day-to-day repeatability and reproducibility.

Cancelled and replaced by ISO 19983:2017.
FINAL DRAFT INTERNATIONAL STANDARD ISO/DISFDIS 19983:20232024(E)

Rubber — Determination of precision of test methods
1 Scope
This document provides guidelines and specifies requirements for estimating the precision of rubber test
methods by means of interlaboratory test programmes based on the procedures given in:
— Method A using ISO 5725 (all parts);-1, ISO 5725-2 and ISO 5725-3;
— Method B using ASTM D4483.
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.
ISO 3534-1, Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in
probability
ISO 3534-2, Statistics — Vocabulary and symbols — Part 2: Applied statistics
ISO 5725-1:2023, Accuracy (trueness and precision) of measurement methods and results — Part 1: General
principles and definitions
ISO 5725-2：2019.,, Accuracy (trueness and precision) of measurement methods and results — Part 2:
Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 5725-3:2023, Accuracy (trueness and precision) of measurement methods and results — Part 3:
Intermediate measures of the precision of a standard measurement method
ISO 5725-4:2020, Accuracy (trueness and precision) of measurement methods and results — Part 4: Basic
methods for the determination of the trueness of a standard measurement method
ISO 5725-5:1998,Accuracy (trueness and precision) of measurement methods and results — Part 5:
Alternative methods for the determination of the precision of a standard measurement method
ISO 5725-6,:1994, Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in
practice of accuracy values
ASTM D4483, Standard Practice for Determining Precision for Test Method Standards in the Rubber and
Carbon Black Industries
ISO/DISFDIS 19983:20232024(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3534-1, ISO 3534-2,
ISO 5725 (all parts),-1, ISO 5725-2, ISO 5725-3, ASTM D4483, and the following apply.
ISO and IEC maintain terminologicalterminology databases for use in standardization at the following
addresses:
— ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
day-to-day repeatability
precision under the conditions where independent test results are obtained with the same method on
identical test items in the same laboratory by the same operator using the same equipment
Note 1 to entry: The time interval between repeated tests is normally between one and seven days.
3.2
type 1 precision
precision determined directly on a target material
Note 1 to entry: Prepared test pieces or test portions of the target material (class of elements) drawn from a
homogeneous source are tested, with no processing or other operations required prior to testing.
3.3
type 2 precision
precision determined indirectly for a target material
Note 1 to entry: The target material is usually combined with a number of homogeneous ancillary materials to
form a composite material and testing is conducted on samples of this and the property response of the target
material is determined.
3.4
pooled standard deviation
square root of the average variance of a set of selected individual variances
Note 1 to entry: The pooled standard deviation, as well as the average variance, is intended as an overall or
general descriptor of some set of variances and their standard deviations.
4 Symbols
Dij day-to-day effect, the day-to-day variance component of which is σD
h values Mandel’s between-laboratory consistency test statistic
k values Mandel’s within-laboratory consistency test statistic
L between-laboratory effect, the between-laboratory variance component of which is σ
i L
M repeatability effect, the repeatability variance component of which is σ
ijk M
n number of measurements
p number of laboratories
2 © ISO 20232024– All rights reserved

ISO/DISFDIS 19983:20232024(E)
q number of days
r repeatability
r day-to-day repeatability as determined from method A calculations
DA
rDB day-to-day repeatability as determined from method B calculations
R reproducibility
(r) relative repeatability
(r ) relative day-to-day repeatability as determined from method A calculations
DA
(r ) relative day-to-day repeatability as determined from method B calculations
DB
(R) relative reproducibility
sM repeatability variance
srD day-to-day repeatability variance as determined from method A calculations
s reproducibility variance
R
s day-to-day variance as determined from method B calculations
D
s between-laboratory variance
L
s standard deviation of data
s repeatability standard deviation
r
srD day-to-day repeatability standard deviation as determined from method A calculations
sR reproducibility standard deviation
S day-to-day repeatability standard deviation as determined from method B calculations
D
SS total sum of squares
T
SS between-laboratory sum of squares
L
SS day-to-day sum of squares
D
SSM repeatability sum of squares
T total sum of data
V between-laboratory mean square
L
V day-to-day mean square
D
V repeatability mean square
M
y data
ijk
i, j, k: each data of laboratory, day, repeat
y y mean value of data
Field Code Changed
mean value of y y
y
y Field Code Changed
Field Code Changed
ϕ total degree of freedom
T
ϕ between-laboratory de
...