This short path distillation is with vigreux but with an inside condenser,which is a combination of a coil and liebig . To be used with 50 mm immersion thermomter with 10/18 joint. with 29/42 inner joints at bottom and side arm. Laboy glassware is made of high-quality borosilicate glasss and annealed at 800 degree Celsius ,can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling.