This Kontes® micro condenser distillation column has a standard taper outer joint at the top and a standard taper inner drip joint at the bottom. Indentations at the bottom for supporting packing material. Jacket permits the column to be used as a condenser. Height: 110mm. Standard Taper Joint: 14/20. Hose Connection Number: 1. Number: 7. Kimble Chase #: 286820-0110.