Glass Organic Chemistry Kit 14/20 Lab Glassware Set Distillation Apparatus 25mm Immersion Thermometer The narrow-bore glass tube helps

The narrow-bore glass tube helps to ensure that pressure is equalized between the two phases

The funnel features a cone shape and a glass stopcock at the bottom

The center tube hose connection is always 10mm in size

where a tight seal is essential

Glass Organic Chemistry Kit 14/20 Lab Glassware Set Distillation Apparatus 25mm Immersion Thermometer The narrow-bore glass tube helpsComponent: The organic chemistry kit includes 5 round bottom flasks with volumes ranging from 25mL to 500mL, a vacuum take off adapter, a Claisen adapter, a 3 way distillation adapter, a thermometer adapter, a penny head stopper, a separatory funnel with joints at the top and bottom, a distillation condenser, a West condenser, a glass kerosene thermometer, and 5 pieces of 24# joint clips. All joints are 14 20. The listing is below: 500mL single neck