Pendant-drop tensiometer

{
  "id": "MLC-T-OAG-002728",
  "term": "Pendant-drop tensiometer",
  "field": "Oil and gas",
  "definition": "An optical instrument that measures interfacial tension between two immiscible fluids by analyzing the shape of a droplet of one fluid suspended in another. A camera captures the profile of the drop, which is distorted from a perfect sphere by the balance between gravitational forces and surface tension. The interfacial tension is calculated by fitting the drop's shape to the Young-Laplace equation, with results expressed in millinewtons per meter (mN/m).",
  "subject": "Enhanced Oil Recovery",
  "url": "https://mlchart.com/terminology/oil-and-gas/pendant-drop-tensiometer/"
}