Laboratory fortified blank

{
  "id": "MLC-T-ENV-015230",
  "term": "Laboratory fortified blank",
  "field": "Environment",
  "term_source": "Laboratory Fortified Blank",
  "definitions": [
    "1. An aliquot of reagent water or other blank matrix to which known quantities of the method analytes and all the preservation compounds are added. The LFB is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control and whether the laboratory is capable of making accurate and precise measurements. {OW/TSC}\n\n2. An aliquot of reagent water or other blank matrix to which known quantities of the method analytes and all the preservation compounds are added. The LFB is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control and whether the laboratory is capable of making accurate and precise measurements.",
    "(radiochemistry) The LFB consists of a volume of a blank matrix to which a known activity of a radioisotope is added. The LFB is prepared and analyzed and results calculated exactly like a sample, and its purpose is to determine whether the methodology is in control, and whether the laboratory is capable of making accurate measurements. {OW/TSC}"
  ],
  "abbreviation": "LFB",
  "subject": [
    "Measurements",
    "Policy and guidance"
  ],
  "references": [
    "Forum on Environmental Measurements (FEM) Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/laboratory-fortified-blank/"
}