Soxhlet extractor

noun1

1. •
   A piece of laboratory apparatus consisting of a glass reservoir that sits over a lower flask (containing a boiling solvent) and under a condenser; a sample contained in a paper thimble is placed in the reservoir and soluble materials are continually extracted by the warm solvent and transferred to the lower flask via a siphon.

   • Amid a gleaming clutter of burners and spectroscopes, funnels and flasks, centrifugal and Soxhlet extractors […], serious girls with their hair in snoods entered numbers into log books — 2006