Interstitial fraction

{
  "id": "MLC-T-CHM-005990",
  "term": "Interstitial fraction",
  "field": "Chemistry",
  "definition": "The proportion of the total volume of a packed bed or column that is not occupied by the solid stationary phase material. This fraction represents the void space between particles, through which the mobile phase flows. It is a dimensionless quantity, often expressed as a decimal or percentage.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "column volume",
    "interstitial volume"
  ],
  "references": [
    "Orange Book, 2nd ed., p. 100 (https://media.iupac.org/publications/analytical_compendium/)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/interstitial-fraction/"
}