Ace Glass 6454-05 Triple Wall, Sub-Zero Flask with Quick-Dump Valve, 150 mm Flange, 5 L

Uniquely designed triple walled, vacuum jacketed flask for sub-zero work with a need to dump quickly. The flask is designed with a large bulb just below the valve seat to accept a large volume of solution upon opening. Large slots in the PTFE valve ensure a fast dump for solids and temperature sensitive solutions. The flask cooling jacket and vacuum jacket extend into the bulb area to minimize warming. Flask has flat flange top with an o-ring groove. Tested to minus 45°C.