Quality Control Check Sample

{
  "id": "MLC-T-ENV-022891",
  "term": "Quality Control Check Sample",
  "field": "Environment",
  "definition": "A sample containing all or a subset of the analytes at known concentrations. The QCS is obtained from a source external to the laboratory or is prepared from a source of standards different from the source of calibration standards. It is used to check laboratory performance with test materials prepared external to the normal preparation process.",
  "references": [
    "Forum on Environmental Measurements (FEM) Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/quality-control-check-sample/"
}