EN ISO 4259-1:2017/A1:2019
(Amendment)Petroleum and related products - Precision of measurement methods and results - Part 1: Determination of precision data in relation to methods of test - Amendment 1 (ISO 4259-1:2017/Amd 1:2019)
Petroleum and related products - Precision of measurement methods and results - Part 1: Determination of precision data in relation to methods of test - Amendment 1 (ISO 4259-1:2017/Amd 1:2019)
This document specifies the methodology for the design of an Interlaboratory Study (ILS) and
calculation of precision estimates of a test method specified by the study. In particular, it defines the
relevant statistical terms (Clause 3), the procedures to be adopted in the planning of ILS to determine
the precision of a test method (Clause 4), and the method of calculating the precision from the results of
such a study (Clauses 5 and 6).
The procedures in this document have been designed specifically for petroleum and petroleum related
products, which are normally considered as homogeneous. However, the procedures described in this
document can also be applied to other types of homogeneous products. Careful investigations are
necessary before applying this document to products for which the assumption of homogeneity can be
questioned.
Mineralölerzeugnisse - Präzision von Messverfahren und Ergebnissen - Teil 1: Bestimmung der Präzisionsdaten von Prüfverfahren - Änderung (ISO 4259-1:2017/Amd 1:2019)
Produits pétroliers et connexes - Fidélité des méthodes de mesure et de leurs résultats - Partie 1: Détermination des valeurs de fidélité relatives aux méthodes d'essai - Amendement 1 (ISO 4259-1:2017/Amd 1:2019)
Nafta in sorodni proizvodi - Natančnost merilnih metod in rezultatov - 1. del: Določevanje natančnosti preskusnih metod - Dopolnilo A1 (ISO 4259-1:2017/DAM 1:2019)
Ta dokument opredeljuje metodologijo za načrtovanje medlaboratorijske študije (ILS) in izračun stopnje natančnosti preskusne metode, ki jo je določila študija. Še zlasti določa ustrezne statistične izraze (točka 3), postopke za načrtovanje medlaboratorijske študije za določitev natančnosti preskusne metode (točka 4) in metodo za izračun natančnosti na podlagi rezultatov take študije (točki 5 in 6).
Postopki v tem dokumentu so bili zasnovani posebej za nafto in sorodne
proizvode, ki se običajno obravnavajo kot homogeni. Kljub temu pa se postopke, opisane v tem
dokumentu, lahko uporablja tudi za druge vrste homogenih proizvodov. Pred uporabo tega dokumenta za proizvode, pri katerih je predpostavka o homogenosti lahko vprašljiva, so potrebne
temeljite preiskave.
General Information
Relations
Overview
EN ISO 4259-1:2017/A1:2019 is Amendment 1 to ISO 4259‑1:2017, adopted by CEN to clarify and improve the procedure for determining precision data for test methods applied to petroleum and related products. The amendment updates statistical procedures, reporting guidance and scope-limit definitions used in interlaboratory studies (ILS) and precision evaluations. It was approved by CEN and published October 2019 for national adoption.
Key topics and technical requirements
- Scope: Applies to determination of precision data (repeatability and reproducibility) in relation to methods of test for petroleum and related products. It amends Part 1 of the ISO 4259 series.
- Statistical treatment: Introduces explicit guidance to perform linear regression of difference measures versus sample mean to decide whether a transformation is necessary. Practitioners must test the slope (b1) for statistical significance at the 5% level.
- Transformation criteria: If regression slopes are insignificant, no transformation is required; if significant or nonlinear patterns exist, a transformation is required and further procedures follow.
- Formula and figure corrections: The amendment corrects and renumbers formulae, refines explanatory text in several Clauses (notably 5.3.1, 6.3.2, 6.3.3.2) and replaces Figure 1 to align with the updated procedures.
- Reporting and scope limits: Clarifies how method scope limits are defined using retained sample means after statistical analysis and how reporting limits for acceptable single results are to be calculated. New subclause 6.6 prescribes that lowest/highest acceptable single results be set relative to the method scope limit ± 1.2·R (where R is evaluated at the retained sample mean).
- Metadata requirements: Requires that precision reports include the number of laboratories, types and ranges of materials studied, and the achieved degrees of freedom for repeatability (r) and reproducibility (R).
Applications and users
This amendment is essential for:
- Testing laboratories conducting interlaboratory studies and generating precision statements for petroleum test methods.
- Standards developers and method authors who must incorporate statistically sound precision criteria into test methods.
- Quality assurance and regulatory bodies that rely on standardized precision data for compliance, trade, and specification limits.
- Instrument and equipment manufacturers supplying volumetric and analytical equipment for petroleum testing.
Practical benefits include improved consistency of precision estimations, clearer pass/fail boundaries for single measurements, and reduced ambiguity in method scope definitions.
Related standards
- ISO 4259 series - Part 1 is one component; consult other parts of ISO 4259 for complementary procedures and guidance on precision of measurement methods for petroleum products.
- Relevant CEN and ISO documents on interlaboratory statistical methods and test-method validation may be referenced when implementing these requirements.
Keywords: EN ISO 4259-1:2017/A1:2019, precision of measurement methods, petroleum and related products, interlaboratory studies, repeatability, reproducibility, reporting limits, linear regression, test method scope.
Frequently Asked Questions
EN ISO 4259-1:2017/A1:2019 is a amendment published by the European Committee for Standardization (CEN). Its full title is "Petroleum and related products - Precision of measurement methods and results - Part 1: Determination of precision data in relation to methods of test - Amendment 1 (ISO 4259-1:2017/Amd 1:2019)". This standard covers: This document specifies the methodology for the design of an Interlaboratory Study (ILS) and calculation of precision estimates of a test method specified by the study. In particular, it defines the relevant statistical terms (Clause 3), the procedures to be adopted in the planning of ILS to determine the precision of a test method (Clause 4), and the method of calculating the precision from the results of such a study (Clauses 5 and 6). The procedures in this document have been designed specifically for petroleum and petroleum related products, which are normally considered as homogeneous. However, the procedures described in this document can also be applied to other types of homogeneous products. Careful investigations are necessary before applying this document to products for which the assumption of homogeneity can be questioned.
This document specifies the methodology for the design of an Interlaboratory Study (ILS) and calculation of precision estimates of a test method specified by the study. In particular, it defines the relevant statistical terms (Clause 3), the procedures to be adopted in the planning of ILS to determine the precision of a test method (Clause 4), and the method of calculating the precision from the results of such a study (Clauses 5 and 6). The procedures in this document have been designed specifically for petroleum and petroleum related products, which are normally considered as homogeneous. However, the procedures described in this document can also be applied to other types of homogeneous products. Careful investigations are necessary before applying this document to products for which the assumption of homogeneity can be questioned.
EN ISO 4259-1:2017/A1:2019 is classified under the following ICS (International Classification for Standards) categories: 75.080 - Petroleum products in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 4259-1:2017/A1:2019 has the following relationships with other standards: It is inter standard links to EN ISO 4259-1:2017, prEN ISO 4259-1. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN ISO 4259-1:2017/A1:2019 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 CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2019
Nafta in sorodni proizvodi - Natančnost merilnih metod in rezultatov - 1. del:
Določevanje natančnosti preskusnih metod - Dopolnilo A1 (ISO 4259-1:2017/DAM
1:2019)
Petroleum and related products - Precision of measurement methods and results - Part
1: Determination of precision data in relation to methods of test - Amendment 1 (ISO
4259-1:2017/Amd 1:2019)
Mineralölerzeugnisse - Präzision von Messverfahren und Ergebnissen - Teil 1:
Bestimmung der Präzisionsdaten von Prüfverfahren - Änderung (ISO 4259-1:2017/Amd
1:2019)
Produits pétroliers et connexes - Fidélité des méthodes de mesure et de leurs résultats -
Partie 1: Détermination des valeurs de fidélité relatives aux méthodes d'essai -
Amendement 1 (ISO 4259-1:2017/Amd 1:2019)
Ta slovenski standard je istoveten z: EN ISO 4259-1:2017/A1:2019
ICS:
75.080 Naftni proizvodi na splošno Petroleum products in
general
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 4259-1:2017/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 75.080
English Version
Petroleum and related products - Precision of
measurement methods and results - Part 1: Determination
of precision data in relation to methods of test -
Amendment 1 (ISO 4259-1:2017/Amd 1:2019)
Produits pétroliers et connexes - Fidélité des méthodes Mineralölerzeugnisse - Präzision von Messverfahren
de mesure et de leurs résultats - Partie 1: und Ergebnissen - Teil 1: Bestimmung der
Détermination des valeurs de fidélité relatives aux Präzisionsdaten von Prüfverfahren - Änderung (ISO
méthodes d'essai - Amendement 1 (ISO 4259- 4259-1:2017/Amd 1:2019)
1:2017/Amd 1:2019)
This amendment A1 modifies the European Standard EN ISO 4259-1:2017; it was approved by CEN on 5 July 2019.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant 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 amendment 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, 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 4259-1:2017/A1:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4259-1:2017/A1:2019) 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 April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
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.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 4259-1:2017/Amd 1:2019 has been approved by CEN as EN ISO 4259-1:2017/A1:2019
without any modification.
INTERNATIONAL ISO
STANDARD 4259-1
First edition
2017-11-01
AMENDMENT 1
2019-09
Petroleum and related products —
Precision of measurement methods
and results —
Part 1:
Determination of precision data in
relation to methods of test
AMENDMENT 1
Produits pétroliers et connexes — Fidélité des méthodes de mesure et
de leurs résultats —
Partie 1: Détermination des valeurs de fidélité relatives aux
méthodes d'essai
AMENDEMENT 1
Reference number
ISO 4259-1:2017/Amd.1:2019(E)
©
ISO 2019
ISO 4259-1:2017/Amd.1:2019(E)
© ISO 2019
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ISO 4259-1:2017/Amd.1:2019(E)
Foreword
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