Quality control calibration sample

{
  "id": "MLC-T-ENV-022890",
  "term": "Quality control calibration sample",
  "field": "Environment",
  "term_source": "Quality Control Calibration Sample",
  "definition": "1. A solution containing the method analytes at a known concentration that are is obtained from a source external to the laboratory and different from the source of calibration standards. The purpose of the QCS is to verify the accuracy of the primary calibration standards.\n\n2. 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.",
  "subject": "Measurements",
  "references": [
    "Adapted from Forum on Environmental Measurements (FEM) Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/quality-control-calibration-sample/"
}