Patent ID: 7820015

Claim:
A device for recording the boiling curve of liquids which comprises: a distillation apparatus comprising a distillation column ( 10 ) and a condenser ( 15 ); a sample dish ( 7 ) connected to the distillation apparatus; a filling means ( 1 ) connected to the sample dish ( 7 ) to fill the sample dish ( 7 ); and a temperature controller connected to the filling means ( 1 ) and the condenser ( 15 ), wherein the filling means ( 1 ) and the condenser ( 15 ) comprise material that conducts heat well, wherein the condenser ( 15 ) comprises an axial zone with reduced diameter of a material transparent to light, which is followed by a zone having a larger inner diameter, an axially movable piston ( 22 ) being received in said zone having a larger inner diameter.