Hollow-blown glass, with drip tip

Specification:

Hollow-blown glass, with drip tip •Ideally suited for use with volumetric flasks etc. •Lower closed end of stopper features a drip-tip to ensure adhered liquid is returned to the flask •Hexagonal head prevents the stopper from rolling and provides a good grip •Flat head allows stopper to be stood on end, thus preventing contamination of the ground surface •Hollow-blown to reduce weight