Span Gas

{
  "id": "MLC-T-ENV-026246",
  "term": "Span Gas",
  "field": "Environment",
  "definition": "1. Purified gas mixture used to span gas analyzers. Span gases must meet the specifications of § 1065.750. Note that calibration gases and span gases are qualitatively the same, but differ in terms of their primary function. Various performance verification checks for gas analyzers and sample handling components might refer to either calibration gases or span gases.\n\n2. Gas of known concentration which is used routinely to set the output level of an analyzer. [40 CFR 86.082-2 (CFR 2018)][40 CFR 86.402-78 (CFR 2018)]",
  "references": [
    "40 CFR 1065.1001 (CFR 2013)",
    "40 CFR 86.1803-01 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/span-gas/"
}