Interchangable Glassware / Stoppers

Used on dif ferent kind of jointed products like bot tles, stoppered cylinder and jointed flasks mainly volumetric flasks. The stopper provides a good grip. Stoppers mentioned below come in two forms one is DIN STANDARD joint sizes and ASTM standard joint sizes which is mainly used on Volumetric Flasks. The stoppers below comes in drip tip form also which if placed on the flask helps liquid to return to the flask till the last drop.