Field train proof blank

{
  "id": "MLC-T-ENV-010949",
  "term": "Field train proof blank",
  "field": "Environment",
  "term_source": "Field Train Proof Blank",
  "definition": "QC sample to evaluate equipment preparation and potential contamination during sample recovery and consists of a fully assembled train at the sampling site, without actual sampling. The field train proof blank train uses glassware from the same preparation batch as the field samples.",
  "subject": "Measurements",
  "references": [
    "40 CFR 63.11426 (2023)"
  ],
  "url": "https://mlchart.com/terminology/environment/field-train-proof-blank/"
}