EN ISO 4259-5:2024

Petroleum and related products - Precision of measurement methods and results - Part 5: Statistical assessment of agreement between two different measurement methods that claim to measure the same property (ISO 4259-5:2023, Corrected version 2024-03)

This document specifies statistical methodology for assessing the expected agreement between two test methods that purport to measure the same property of a material, and for deciding if a simple linear bias correction can further improve the expected agreement.
This document is applicable for analytical methods which measure quantitative properties of petroleum or petroleum products resulting from a multi-sample-multi-lab study (MSMLS). These types of studies include but are not limited to interlaboratory studies (ILS) meeting the requirements of ISO 4259-1 or equivalent, and proficiency testing programmes (PTP) meeting the requirements of ISO 4259-3 or equivalent.
The methodology specified in this document establishes the limiting value for the difference between two results where each result is obtained by a different operator using different apparatus and two methods X and Y, respectively, on identical material. One of the methods (X or Y) has been appropriately bias-corrected to agree with the other in accordance with this practice. This limit is designated as the between-methods reproducibility. This value is expected to be exceeded with a probability of 5 % under the correct and normal operation of both test methods due to random variation.
NOTE      Further conditions for application of this methodology are given in 5.1 and 5.2.

Mineralölerzeugnisse - Präzision von Messverfahren und Ergebnissen - Teil 5: Statistische Bewertung der Übereinstimmung zweier verschiedener Messverfahren die vorgeben, dieselbe Eigenschaft zu messen (ISO 4259-5:2023, korrigierte Fassung 2024-03)

Dieses Dokument legt die statistische Methodik zur Beurteilung der erwarteten Übereinstimmung zweier Prüfverfahren, die beanspruchen, dieselbe Eigenschaft eines Materials zu messen, und für die Entscheidung, ob eine einfache lineare Bias-Korrektur (Korrektur der systematischen Abweichung) die erwartete Übereinstimmung weiter verbessern kann, fest.
Dieses Dokument ist für Analyseverfahren anwendbar, bei denen die quantitativen Eigenschaften von Mineralölerzeugnissen gemessen werden, die sich aus einer Multi-Sample-Multi-Lab-Studie (MSMLS, en: multi-sample-multi-lab study) ergeben. Zu dieser Art von Studien gehören unter anderem Ringversuche (ILS, en: interlaboratory study), die den Anforderungen der ISO 4259 1 oder einer gleichwertigen Norm entsprechen, und Eignungsprüfungsprogramme (PTP, en: proficiency testing program), die den Anforderungen der ISO 4259 3 oder einer gleichwertigen Norm entsprechen.
Die in diesem Dokument festgelegte Methodik bestimmt den Grenzwert für die Differenz zwischen zwei Ergebnissen, wenn jedes Ergebnis von einem anderen Bearbeiter mit einem anderen Prüfgerät und zwei Verfahren X bzw. Y an identischem Material erhalten wurde. Eines der Verfahren (X oder Y) wurde entsprechend Bias-korrigiert, so dass es mit dem anderen Verfahren entsprechend dieser Praxis übereinstimmt. Dieser Grenzwert wird als die Vergleichbarkeit zwischen den Verfahren bezeichnet. Für diesen Wert wird erwartet, dass er bei üblicher und korrekter Durchführung beider Prüfverfahren aufgrund zufälliger Schwankung mit einer Wahrscheinlichkeit von 5 % überschritten wird.
ANMERKUNG   Weitere Bedingungen für die Anwendung dieser Methodik sind in 5.1 und 5.2 angegeben.

Produits pétroliers et connexes - Fidélité des méthodes de mesure et de leurs résultats - Partie 5: Évaluation statistique de l'accord entre deux méthodes de mesure différentes qui prétendent mesurer la même propriété(ISO 4259-5:2023, Version corrigée 2024-03)

Le présent document spécifie une méthodologie statistique permettant d'évaluer l'accord attendu entre deux méthodes d'essai qui prétendent mesurer la même propriété d'un matériau et de déterminer si une simple correction de biais linéaire peut encore améliorer l'accord attendu.
Le présent document est applicable à des méthodes d'analyse qui mesurent des propriétés quantitatives du pétrole ou des produits connexes résultant d'une étude multi-échantillon et multi-laboratoire (MSMLS). Ces types d'études comprennent les essais interlaboratoires (ILS) conformes aux exigences de l'ISO 4259-1, ou équivalent, et les programmes d'essais d'aptitude (PTP) conformes aux exigences de l'ISO 4259-3, ou équivalent, sans toutefois s'y limiter.
La méthodologie spécifiée dans le présent document établit la valeur limite de la différence entre deux résultats, lorsque chaque résultat est obtenu par un opérateur différent utilisant un appareil différent et appliquant les deux méthodes X et Y, respectivement, sur un matériau identique. L'une des méthodes (X ou Y) a fait l'objet d'une correction de biais appropriée pour être en accord avec l'autre méthode conformément à ce mode opératoire. Cette limite est désignée comme la reproductibilité inter-méthodes. Il est attendu, avec une probabilité de 5 %, que cette valeur soit dépassée dans les conditions normales et correctes d'application de ces deux méthodes en raison de la variation aléatoire.
NOTE      Les conditions supplémentaires pour l'application de cette méthodologie sont données en 5.1 et 5.2.

Nafta in sorodni proizvodi - Natančnost merilnih metod in rezultatov - 5. del: Statistična ocena skladnosti med dvema različnima merilnima metodama, za kateri velja trditev, da merita isto lastnost (ISO 4259-5:2023)

Ta dokument določa statistično metodologijo za ocenjevanje pričakovane skladnosti med dvema preskusnima metodama, s katerima naj bi se merilo isto lastnost materiala, in za določanje, ali lahko enostaven popravek linearne nevzorčne napake izboljša pričakovano skladnost.
Ta dokument se uporablja za analitične metode, s katerimi se merijo kvantitativne lastnosti nafte
ali naftnih proizvodov, ki so nastali v študiji več vzorcev v več laboratorijih (MSMLS). Te vrste med drugim vključujejo
medlaboratorijske študije (ILS), ki izpolnjujejo zahteve iz standarda ISO 4259-1 ali enakovredne, in programe preskušanja strokovne usposobljenosti (PTP), ki izpolnjujejo zahteve iz standarda ISO 4259-3 ali enakovredno.
Metodologija, določena v tem dokumentu, vzpostavlja mejno vrednost za razlikovanje med dvema rezultatoma, pri čemer je vsak rezultat pridobil drug upravljavec z uporabo druge naprave in metodama X in Y na istem materialu. V skladu s to prakso je bila pri eni od metod (X ali Y) ustrezno
popravljena nevzorčna napaka. Ta meja je označena kot ponovljivost med metodama. Pričakuje se, da bo ta vrednost prekoračena z verjetnostjo 5 % ob
pravilni in normalni izvedbi obeh preskusnih metod zaradi naključne spremembe.
OPOMBA: Dodatni pogoji za uporabo te metodologije so navedeni v 5.1 in 5.2.

General Information

• Status: Published
• Publication Date: 09-Jan-2024
• ICS: 75.080 - Petroleum products in general
• Technical Committee: CEN/TC 19 - Petroleum products, lubricants and related products
• Drafting Committee: CEN/TC 19 - Petroleum products, lubricants and related products
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 10-Jan-2024
• Due Date: 22-Jun-2023
• Completion Date: 10-Jan-2024
• Ref Project: SIST EN ISO 4259-5:2024 - Petroleum and related products - Precision of measurement methods and results - Part 5: Statistical assessment of agreement between two different measurement methods that claim to measure the same property (ISO 4259-5:2023)

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2024
Nafta in sorodni proizvodi - Natančnost merilnih metod in rezultatov - 5. del:
Statistična ocena skladnosti med dvema različnima merilnima metodama, za kateri
velja trditev, da merita isto lastnost (ISO 4259-5:2023)
Petroleum and related products - Precision of measurement methods and results - Part
5: Statistical assessment of agreement between two different measurement methods
that claim to measure the same property (ISO 4259-5:2023)
Mineralölerzeugnisse - Präzision von Messverfahren und Ergebnissen - Teil 5:
Statistische Bewertung der Übereinstimmung zweier verschiedener Messverfahren die
vorgeben, dieselbe Eigenschaft zu messen (ISO 4259-5:2023)
Produits pétroliers et connexes - Fidélité des méthodes de mesure et de leurs résultats -
Partie 5: Évaluation statistique de l'accord entre deux méthodes de mesure différentes
qui prétendent mesurer la même propriété(ISO 4259-5:2023)
Ta slovenski standard je istoveten z: EN ISO 4259-5:2024
ICS:
75.080 Naftni proizvodi na splošno Petroleum products in
general
75.180.20 Predelovalna oprema Processing equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4259-5
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2024
EUROPÄISCHE NORM
ICS 75.080
English Version
Petroleum and related products - Precision of
measurement methods and results - Part 5: Statistical
assessment of agreement between two different
measurement methods that claim to measure the same
property (ISO 4259-5:2023)
Produits pétroliers et connexes - Fidélité des méthodes Mineralölerzeugnisse - Präzision von Messverfahren
de mesure et de leurs résultats - Partie 5: Évaluation und Ergebnissen - Teil 5: Statistische Bewertung der
statistique de l'accord entre deux méthodes de mesure Übereinstimmung zweier verschiedener
différentes qui prétendent mesurer la même Messverfahren die vorgeben, dieselbe Eigenschaft zu
propriété(ISO 4259-5:2023) messen (ISO 4259-5:2023)
This European Standard was approved by CEN on 10 December 2023.

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 ISO 4259-5:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 4259-5:2024) has been prepared by Technical Committee ISO/TC 28
"Petroleum and related products, fuels and lubricants from natural or synthetic sources" in
collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related
products of petroleum, synthetic and biological origin” the secretariat of which is held by NEN.
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 July 2024, and conflicting national standards shall be
withdrawn at the latest by July 2024.
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.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. 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.
Endorsement notice
The text of ISO 4259-5:2023 has been approved by CEN as EN ISO 4259-5:2024 without any
modification.
INTERNATIONAL ISO
STANDARD 4259-5
First edition
2023-12
Petroleum and related products —
Precision of measurement methods
and results —
Part 5:
Statistical assessment of agreement
between two different measurement
methods that claim to measure the
same property
Produits pétroliers et connexes — Fidélité des méthodes de mesure et
de leurs résultats —
Partie 5: Évaluation statistique de l'accord entre deux méthodes de
mesure différentes qui prétendent mesurer la même propriété
Reference number
ISO 4259-5:2023(E)
ISO 4259-5:2023(E)
© ISO 2023
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 4259-5:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Procedure overview .4
5.1 General requirements . 4
5.2 Additional requirements for PTP data . 5
5.2.1 General conditions . 5
5.2.2 Test on existence of extreme samples . 5
5.2.3 Test on distribution of lab results . 6
5.2.4 Comparison of precision . 7
5.3 Brief sequential steps of the procedure . 7
5.4 Flow diagram of the procedure . 9
6 Procedure .11
6.1 Sample mean and standard error . 11
6.1.1 General . 11
6.1.2 Computation of the means . 11
6.1.3 Calculation of standard errors . 11
6.2 Suitability of the data .12
6.2.1 Test on property variation .12
6.2.2 Correlation of the test methods .12
6.3 Bias correction selection statistics . 13
6.3.1 General .13
6.3.2 Class 0—No bias correction . 13
6.3.3 Class 1a—Constant bias correction . 13
6.3.4 Class 1b — Proportional bias correction . 14
6.3.5 Class 2 — Proportional and constant bias correction . 14
6.4 Selection of the appropriate bias correction class . 15
6.5 Confirming the normal distribution of weighted residuals . 16
6.6 Sample-specific biases . 17
7 Report .19
8 Confirmation of the correlation.19
Annex A (informative) Worked example using ILS data .21
Annex B (informative) Worked example using PTP data .33
Bibliography .48
iii
ISO 4259-5:2023(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 El
...