Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by profession or discipline]
7. [equipment for science and technology]
8. scientific instruments
9. chemistry equipment
10. chemical testing devices

Anotations

Scope note:

A class of devices in which a solvent is continuiously boiled in the bottom of a receptacle and condensed at the top, the material to be extracted is held above the main mass in a filter suspended in a wire frame, where it remains in an atmosphere of solvent vapor.