stonylab Round Bottom Flask is commonly used to contain chemical reactions in research and laboratory-scale synthesis, especially for reflux set-ups Made of borosilicate glass; heavy duty, heavy wall and reusable Smooth surface with uniform glass thickness 2-neck spherical bottom RBF; one 45/50 center standard taper outer Joint and one 24/40 side standard taper outer joint 1-year limited manufacturer warranty Our Labware refers to a range of equipment and containers designed for use in laboratory environments. These items are typically crafted from materials like glass, plastic, or metal to ensure durability and chemical resistance. Common examples include beakers, test tubes, flasks, and petri dishes, which are used for measuring, mixing, or storing in scientific, educational, or industrial settings.