NEW! COVID-19 Products
This design is similar to the CG-1320, but has two 4 mm drain holes at the base of the inner tube to allow solvent to drain back into the evaporation flask. The lower stem has 2 large holes; see CG-1319 and CG-1322 for modified/improved versions.
This item is available with a 100, 250 or 500 mL bulb in a variety of upper and lower joint sizes.