GSO ISO 21748:2021

ISO 21748:2017
Gulf Standard   Current Edition · Approved on 01 July 2021

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

GSO ISO 21748:2021 Files

English 38 Pages
Current Edition Reference Language
85.96 OMR

GSO ISO 21748:2021 Scope

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.

Best Sellers From Metrology Sector

GSO OIML R87:2021
OIML R87:2016 
Gulf Standard
Quantity of product in prepackages
GSO OIML R79:2021
OIML R79:2015 
Gulf Standard
Labeling requirements for prepackages
OS GSO OIML R76-1:2009
OIML R 76-1:2006 
Omani Standard
Non-automatic weighing instruments – Part 1: Metrological and technical requirements - Tests
GSO OIML R 76-1:2009
OIML R 76-1:2006 
Gulf Standard
Non-automatic weighing instruments – Part 1: Metrological and technical requirements - Tests

Recently Published from Metrology Sector

GSO OIML R 69:2002
OIML R 69:1985 
Gulf Standard
GLASS CAPILLARY VISCOMETERS FOR THE MEASUREMENT OF KINEMATIC VISCOSITY VERIFICATION METHOD
GSO 266:1994
 
Gulf Standard
Method of verification of weighbridges for road vehicles (Trucks)
OS GSO 162:1993
GSO 162:1993 
Omani Standard
VERIFICATION METHOD FOR COMMERCIAL LENGTH MEASURES
OS GSO 266:1994
GSO 266:1994 
Omani Standard
Method of verification of weighbridges for road vehicles (Trucks)