Retort Analysis Drilling Fluid | Step By Step
Retort analysis for drilling fluid is used for determining oil, water and solids content in the mud, comprising a sample chamber assembly of known volume filled with mud. The sample chamber is put in a heating chamber to boil off the water (and oil), which passes via a condenser tube into a graduated glass measuring cylinder, where the water (and oil) volume can be recorded.

What Is The Drilling Fluid Mud Retort?
https://www.drillingmanual.com/2020/09/retort-analysis-drilling-fluid.html