This 50 mL pear-shaped separating funnel is made from Borosilicate 3.3 glass with a pressure-equalizing design and a Rotaflow stopcock for smooth, controlled dispensing. It is fitted with an interchangeable 14/23 plastic stopper. The borosilicate glass construction provides transparency for clear visibility during separations and is autoclavable with superior chemical durability. The heat tolerances for this glass are: Strain Point 515°C, Annealing Point 565°C, and Softening Point 820°C. This funnel is designed for liquid-liquid extraction and drop-wise reagent addition in professional and educational laboratory settings.