BS ISO 21748:2017 ✓ Most Recent

BS 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.

This document is applicable to all measurement and test fields where an uncertainty associated with a result has to be determined.

This document does not describe the application of repeatability data in the absence of reproducibility data.

This document 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.


Cross References:
ISO GUIDE 33:2000
ISO 10576-1:2003 Ed 1
ISO 5725-5:1998
ISO 11648-2:2001 Ed 1
ISO/IEC 17043:2010 Ed 1
ISO 3534-3:2013 ED3
ISO 3534-2:2006 Ed 2 (R10)
ISO/IEC 17025:2005 Ed 1
ISO 5725-3:1994
ISO 7870-2:2013
ISO 3534-1:2006 Ed 2 (R10)
ISO/IEC Guide 99:2007
ISO 5725-1:1994
ISO 5725-6:1994
ISO/IEC GUIDE 98-3:2008 Ed 1
ISO 7870-4:2011
ISO 5725-4:1994
ISO/TR 22971:2005 Ed 1


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