Parts per million

{
  "id": "MLC-T-OAG-002714",
  "term": "Parts per million",
  "field": "Oil and gas",
  "definition": "A unit of concentration representing one part of a substance per million parts of the total mixture, often used to express the concentration of dissolved solids or contaminants in drilling fluids. It is a dimensionless quantity, equivalent to milligrams per liter (mg/L) for aqueous solutions with a density close to that of water. For gases, it can refer to parts per million by volume (ppmv).",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/parts-per-million/"
}