Image Credit: Technical Glass Products, Inc. - OH | U.S. Plastic Corporation | Restek
Ground glass joints are used in laboratories to form leak-free connections between component labware such as flasks, condensers, and bubblers. As sealed labware interconnects, they join the flask or bubbler to the condenser in chemical apparatus. Ground glass joints have leak-free ends that can be assembled easily and held together with friction. Product types include inner, outer, male and female joints; conically-tapered and spherical joints; and ball and socket joints. Ground glass joints are often clear, but are also available in amber.