CYBER SAVINGS: NIOSH-Approved N99 Masks for less than 60 cents! Get them now!
These are the most traditional rotary evaporator bump bulbs/traps which are used between the vapor tube and evaporation flask on a rotary evaporator to prevent the contents of the flask from being drawn into the condenser in the event of solvent bumping. The lower stem has 2 large holes; see CG-1321 and CG-1322 for modified/improved versions.
This item is available in 100, 250, and 500 mL volumes with your choice of upper and lower joints.