Survey - Understanding metrological traceability

This Eurachem Report provides a summary of 'check box' responses received to a voluntary online survey conducted in 2019. The survey sought to establish the extent of consensus, or otherwise, on the following issues:
- The extent to which validation and QC materials (as distinct from calibration materials) provide metrological traceability.
- The effect of ‘recalibration’ – use of a secondary material to correct a measurement result from a system that has already been calibrated.
- Metrological traceability for reference values obtained by interlaboratory study.