Hot extraction apparatus according to Knöfler-Böhm, DURAN® tube

The condensate flows through the extraction material and continuously runs back into the flask without interrupting the extraction, i.e. the extractant is in constant circulation.
The complete devices consist of:
Hot extraction attachment made of DURAN® tube, Dimroth condenser with GL 14 thread, made of DURAN® tube, round bottom flask material: DURAN®
Item number: 6237313
Manufacturer Part Number. : 05375025
Manufacturer number: 9010839
Manufacturer: Lenz-Laborglas GmbH & Co. KG
Item name 1: Hot extraction apparatus according to Knöfler-Böhm
Item name 2: Extractor 30 ml, with Dimroth cooler NS 29/32
Article name 3: with thread GL 14, flask 100 ml,