Claisen Distillation Adapter Four-way With 24/40 Joints and Thermometer CapThis distillation adapter is a combination of a clasion adapter and a 3 way thermometer, used in distillation apparatus to connect a distillation flask and a condenser. With a compression cap accommodates 5. 0 7. 5mm O. D thermometer use it as a syringe port. With 24 40 standard taper outer & inner joint, can be fit for any apparatus with 24 40 joints. The glassware are all made of high quality borosilicate glass and made by hand blowing to ensure