These flasks with tubulation are blown in special molds in shapes designed to give maximum mechanical strength. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers. Tubulation O.D. on sizes up to 1000 mL is 10 mm. Tubulation O.D. for 2000 ml and 4000 ml is 12.5 mm.

These small filtering flasks are recommended for microchemical use. All flasks have permanent white enamel marking spots.

With single long neck flask with an outer joint.

With Outer Joint

Three neck flask with bottom 4 mm PTFE stopcock.

Round bottom flask with side arm.

Flat bottom flask with side arm.

Thick wall borosilicate glass flask has wide opening for easy access to the sample. Flat bottom so that flask can be free standing. Interchangeable with most freeze drying flasks.

Round bottom, three-neck flask with standard taper joints on the center and side necks. Lower drain comes complete with PTFE plug and Viton o-rings for draining.

For use in rotary evaporator systems.