Out-of-control criteria

{
  "id": "MLC-T-CHM-008373",
  "term": "Out-of-control criteria",
  "field": "Chemistry",
  "definition": "A set of predefined rules or statistical thresholds used to determine when a process, such as an analytical measurement, is no longer operating within its expected statistical limits. Exceeding these criteria indicates that a process is unstable or has shifted, requiring investigation and corrective action. These criteria are often visualized on a control chart.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "control chart",
    "control limit"
  ],
  "references": [
    "PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1031 (https://doi.org/10.1515/pac-2019-0819)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/out-of-control-criteria/"
}