Proficiency test item

{
  "id": "MLC-T-CHM-009513",
  "term": "Proficiency test item",
  "field": "Chemistry",
  "definition": "A sample, material, or artifact provided to participating laboratories in a proficiency testing scheme for analysis or measurement. The item's properties are usually homogeneous and stable, allowing for a fair comparison of laboratory performance. Results from these items are used to assess the competence of laboratories.",
  "synonyms": [
    "PT item"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "proficiency testing"
  ],
  "references": [
    "PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1033 (https://doi.org/10.1515/pac-2019-0819)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/proficiency-test-item/"
}