Flask is heavy-walled made of borosilicate glass. The opening is 2 inches inner diameter so use a #12 or #13 stopper. The barbed glass side arm accepts a vacuum hose. The 3.3 borosilicate is perfect for heating and cooling as it has a low coefficient of thermal expansion. The flask is typically used to create a vacuum and filter solutions. Flask also works as a Buchner flask for filtering solutions in chemistry, physics, and life science labs, and educational settings.
Our Supplier’s Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.
- 5000ml Capacity Flask with barbed side arm for filtering
- 500ml graduations
- Heavy borosilicate glass walls
- Top opening diameter is 2 inches so use a #12 or #13 stopper
- Glass has no defects and a perfectly flat bottom, will sit perfectly on a hot plate or stirrer