material characterization study

https://doi.org/10.1351/goldbook.08085
Intralaboratory comparison or interlaboratory comparison with the aim of assigning a reference quantity value to a quantity with stated measurement uncertainty or value to a reference nominal property value with stated examination uncertainty.
Notes:
  1. A material characterization study often utilizes selected (routine or reference) laboratories to measure quantity values of a candidate reference material by measurement procedure(s) judged most likely to provide the smallest associated measurement uncertainty.
  2. Although proficiency testing is not primarily intended as a material characterization study, reference materials are sometimes certified on the basis of results from a proficiency testing scheme after appropriate quality assurance procedures.
Source:
PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1029 (https://doi.org/10.1515/pac-2019-0819)