Skip to main content
Back

ISO 21748:2017

Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty evaluation

General information

Valid from 24.04.2017
Directives or regulations
None

Standard history

Status
Date
Type
Name
24.04.2017
Main
ISO 21748:2017 gives guidance for
-      evaluation of measurement uncertainties using data obtained from studies conducted in accordance with ISO 5725-2, and
-      comparison of collaborative study results with measurement uncertainty (MU) obtained using formal principles of uncertainty propagation (see Clause 14).
ISO 5725-3 provides additional models for studies of intermediate precision. However, while the same general approach may be applied to the use of such extended models, uncertainty evaluation using these models is not incorporated in this document.
ISO 21748:2017 is applicable to all measurement and test fields where an uncertainty associated with a result has to be determined.
ISO 21748:2017 does not describe the application of repeatability data in the absence of reproducibility data.
ISO 21748:2017  assumes that recognized, non-negligible systematic effects are corrected, either by applying a numerical correction as part of the method of measurement, or by investigation and removal of the cause of the effect.
The recommendations in this document are primarily for guidance. It is recognized that while the recommendations presented do form a valid approach to the evaluation of uncertainty for many purposes, it is also possible to adopt other suitable approaches.
In general, references to measurement results, methods and processes in this document are normally understood to apply also to testing results, methods and processes.

Required fields are indicated with *

*
*
*
PDF
226.82 € incl tax
Paper
226.82 € incl tax
Standard monitoring

Customers who bought this item also bought

Main

EVS-ISO 5725-5:2002

Accuracy (trueness and precision) of measurement methods and results - Part 5: Alternative methods for the determination of the precision of a standard measurement method
Newest version Valid from 01.06.2002
Main

ISO/TS 21749:2005

Measurement uncertainty for metrological applications -- Repeated measurements and nested experiments
Newest version Valid from 04.03.2005
Main

ISO 7870-2:2023

Control charts — Part 2: Shewhart control charts
Newest version Valid from 14.03.2023
Main + amendment

EVS-EN 14058:2017+A1:2023

Protective clothing - Garments for protection against cool environments
Newest version Valid from 15.05.2023