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  • BSI
    BS ISO 5667-20:2008 Water quality. Sampling - Guidance on the use of sampling data for decision making. Compliance with thresholds and classification systems
    Edition: 2008
    $473.45
    / user per year

Description of BS ISO 5667-20:2008 2008

This part of ISO 5667 establishes principles, basic requirements, and illustrative methods for dealing with the use of sample data for decision making based on the assessment of the confidence that water quality:

  1. meets targets and complies with thresholds;

  2. has changed; and/or

  3. lies in a particular grade in a classification system.

This part of ISO 5667 also specifies methods for preliminary examination of the sensitivity of decisions to error and uncertainty, although it does not cover the full range of statistical techniques.

This part of ISO 5667 provides general advice on decision making related to constraint formulation for expression of thresholds and targets and the form and scale of sampling programmes.

NOTE 1 In the water industry, “standard” is commonly used to indicate the value or limit of a parameter of interest. However, in this part of ISO 5667, the term “threshold” is used to avoid confusion with published national, regional, and International Standards.

NOTE 2 This document is framed in terms of sampling and measurement of chemical concentrations, in particular those subject to strong day-to-day temporal variations. The principles apply, however, to any item estimated by sampling which is subject to random error, including microbiological and biological data, and data subject to strong spatial variations.



Standard NumberBS ISO 5667-20:2008
TitleWater quality. Sampling - Guidance on the use of sampling data for decision making. Compliance with thresholds and classification systems
StatusConfirmed
Publication Date2008-04-30
Identical National Standard OfISO 5667-20:2008
DescriptorsEstimation, Water testing, Confidence limits, Data analysis, Errors, Water, Samples, Classification systems, Grades (quality), Statistical methods of analysis, Test specimens, Sampling methods, Quality
ICS13.060.45 Examination of water in general
CommitteeEH/3/6
ISBN978 0 580 55352 3
PublisherBSI
Pages46

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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