ISO/TS 16489:2006

Name: ISO/TS 16489:2006 — Water quality — Guidance for establishing the equivalency of results
SKU: ISO/TS 16489:2006
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Water quality — Guidance for establishing the equivalency of results

Название (английский):

ISO/TS 16489:2006

Water quality — Guidance for establishing the equivalency of results

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 34
Дата публикации:: 15 мая 2006 г.
Издание:: ISO TS 16489 edition 1 version 1
ICS:: 13.060.45

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Описание (английский):

ISO/TS 16489:2006 describes statistical procedures to test the equivalency of results obtained by two different analytical methods used in the analysis of waters. It is not applicable for establishing whether two methods can be shown to be equivalent. The procedures given in ISO/TS 16489:2006 are only applicable to demonstrating the equivalency of results.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/TS 16489:2006 - "Water quality - Guidance for establishing the equivalency of results" provides statistical guidance for demonstrating whether results produced by two different analytical methods for water analysis are equivalent. It focuses on equivalency of results, not on proving the overall equivalence of the two methods themselves. The Technical Specification outlines appropriate statistical procedures, assumptions (e.g., normal distribution, repeatability conditions) and reporting practices to support objective comparisons at a chosen confidence level (commonly 95%).

Key topics and requirements

Scope and limitations: Applies to demonstrating equivalency of analytical results for water quality parameters; not intended to establish method equivalence.

Statistical assumptions: Data should be essentially independent and normally distributed; repeatability conditions are assumed where applicable.

Amount of data: Emphasises statistical power - more data and appropriate degrees of freedom improve test reliability; consider higher confidence levels (e.g., 99%) when needed.

Comparison procedures:

Comparison of arithmetic means for independently obtained replicate data (Clause 7, Annex B).
Comparison of population vs. sample means when data arise over time or from different analysts (Clause 8, Annex C).
Analysis of variance (ANOVA) for multi-analyst or multi-factor comparisons (Clause 9, Annex D).
Methods for comparing results from different sample matrices and multiple concentration levels, including orthogonal regression and the difference method (Clause 10, Annex E).

Data visualisation and reporting: Recommends plotting results to inspect spread and trends (Annex F) and provides examples, statistical tables and reporting templates (Annexes A–G).

Normative reference: Links to ISO 5725-2 for repeatability and reproducibility principles.

Practical applications

Demonstrating that test results from a field method, rapid technique or new instrumentation are equivalent to a reference laboratory method for a specific water parameter.

Comparing legacy laboratory methods with updated analytical procedures during method transition or validation.

Assessing equivalency across different sample matrices or concentration ranges (with appropriate clause selection).

Supporting regulatory submissions, accreditation evidence, inter-laboratory studies and quality assurance documentation.

Who should use this standard

Environmental and water quality laboratories performing method comparisons.

Method developers, instrument manufacturers and validation teams.

Accreditation bodies, regulators and consultants requiring objective statistical demonstration of result equivalency.

Quality managers preparing method comparison reports for compliance or procurement decisions.

Related standards

ISO 5725-2 (Accuracy - repeatability and reproducibility) is a key normative reference for precision assessment used alongside ISO/TS 16489.

Keywords: ISO/TS 16489, water quality, equivalency of results, statistical procedures, analytical methods, orthogonal regression, analysis of variance, repeatability, ISO 5725-2.

ISO/TS 16489:2006

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications

Who should use this standard

Related standards

Технические детали

PD ISO/TR 22971:2005

Accuracy (trueness and precision) of measurement methods and results. Practical guidance for the use of ISO 5…

DD ISO/TS 16489:2006

Water quality. Guidance for establishing the equivalency of results

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