Round Bottom Wide Neck Borosilicate Glass Boiling Flask with Beaded Rim, 50mL

This pack of 12 round-bottom boiling flasks is made from Borosilicate 3.3 glass, each with a 50 mL capacity and a wide neck. The inside diameter of the flask neck is 1-1/8 inches, and the full bulb diameter is 2 inches. Each flask features a thick beaded rim. Round-bottom flasks heat liquids evenly and are commonly used in distillation setups. The round bottom requires the flask to be held upright by a clamp on a stand or placed in a cork ring on a level surface. The borosilicate glass construction is autoclavable with superior chemical durability. Heat tolerances are: Strain Point 515°C, Annealing Point 565°C, and Softening Point 820°C.