QUICKFIT® Dropping Funnel, open top, cylindrical, with ROTAFLO® PTFE stopcock key, ground cone NS 19/26, 50mL

Complies with ISO 4800 Type 3, Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A), The funnel stem has a ground cone joint with the stem inside the cone, The open top design allows the easy addition of solutions to the funnel and make them ideal for use as reservoirs for glass chromatography columns., With ROTAFLO® General Purpose PTFE stopcock assembly for fine control of the liquid flow.