Graduations to stopcock are numbered both up and down
Supplied with a ground glass stopper and PTFE stopcock
Reproducible addition rates achieved
Permits addition of solvents to flash chromatography columns without disturbing silica-gel/packing layer
Ungraduated cylindrical addition funnel with PTFE stopcock manufactured from 33 expansion, low extractable borosilicate glass. Available with 250mL or 500mL capacity.