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    I.S. EN ISO 4259-1:2017&A1:2019&A2:2020

    Current The latest, up-to-date edition.

    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)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  24-01-2021

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Stages in the planning of an interlaboratory study for the determination of the precision of a test method
    5 Statistical treatment of ILS results
    6 Analysis of variance, calculation and expression of precision estimates 7 R/r ratio
    Annex A (normative) Determination of number of samples required
    Annex B (informative) Derivation of formula for estimating the number of laboratories and samples required to meet minimum 30 degrees of freedom
    Annex C (normative) Notation and tests
    Annex D (normative) Illustration of procedures using ILS results for Bromine Number and statistical tables
    Annex E (normative) Types of dependence and corresponding transformations
    Annex F (normative) Weighted linear regression analysis
    Annex G (normative) Rules for rounding
    Annex H (normative) GESD technique to simultaneously identify multiple outliers in a data set
    Annex I (informative) Glossary
    Bibliography

    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee TC 28
    Document Type Test Method
    Product Note The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes
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