Comparator

{
  "id": "MLC-T-CHM-002297",
  "term": "Comparator",
  "field": "Chemistry",
  "definition": "A substance of known composition or activity used as a reference in analytical procedures, particularly in activation analysis. It is irradiated alongside the sample under identical conditions to provide a basis for quantitative determination of elements. The activity induced in the comparator is measured and compared to that of the sample to calculate the concentration of the analyte.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "activation",
    "activation analysis",
    "test portion"
  ],
  "references": [
    "PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2516 (https://doi.org/10.1351/pac199466122513)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/comparator/"
}