High efficiency coil condenser especially suited for vacuum applications

Coil length is approximately 70 mm. The top joint is a combination cap, thread and standard taper outer joint to accommodate and seal other microscale apparatus. The O.D. of the top joint has an external 20-400 thread to facilitate an o-ring, and an open-top phenolic cap. The internal or I.D. at the top is a ground standard taper 14/10 outer joint. Bottom is standard taper 14/10 inner joint. Fabricated from borosilicate glass.