Corning® Pyrex® Kuderna-Danish Concentrator Tube
By Corning
These innovative Pyrex® concentrator tubes combine the concepts of a Kuderna-Danish flask and tube into one piece of glass apparatus. The 100mL capacity permits sufficient solvent capacity for the full extraction process. Jacket permits circulation of hot water to boil the solvent during extraction/concentration. The bottom portion of the tube is never heated, so the sample won't boil dry.