Rugged, spherical reaction flask with Duran style o-ring grooved side port, angled 45° for ease in adding material to flask. In addition to the side port, flask has three standard taper 45/50 reinforced side necks, all vertical. Center is a Duran style o-ring grooved flange supplied with a CAPFE (PTFE encapsulated silicone) o-ring for use with quick release clamp (not included). Supplied with capacity reference gradations. Order cap for side port, clamp for side port, clamp for center flange, and extra o-rings separately.

In addition to the side port, flask has three standard taper 45/50 reinforced side necks, all vertical. Center is a Duran style o-ring grooved flange supplied with a CAPFE (PTFE encapsulated silicone) o-ring for use with quick release clamp (not included). Supplied with capacity reference gradations. Order cap for side port, clamp for side port, clamp for center flange, and extra o-rings separately.