Laboratory Duplicate(s)

{
  "id": "MLC-T-ENV-015227",
  "term": "Laboratory Duplicate(s)",
  "field": "Environment",
  "definition": "1. The analysis or measurements of the variable of interest performed identically on two sub-samples of the same sample, usually taken from the same container. The results from duplicate analyses are used to evaluate analytical or measurement precision and include variability associated with sub-sampling and the matrix, but not the precision of field sampling, preservation, or storage internal to the laboratory. {ORD} {OW/EAD} {OPP} {ORCR}\n\n2. Two aliquots of the same sample taken in the laboratory and analyzed separately with identical procedures. Analyses of LD1 and LD2 indicates precision associated with laboratory procedures, but not with sample collection, preservation, or storage procedures {OW/TSC}",
  "abbreviation": "LD1",
  "synonyms": [
    "LD2"
  ],
  "subject": "Policy and guidance",
  "references": [
    "Forum on Environmental Measurements (FEM) Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/laboratory-duplicate-s/"
}