DescriptionMade of eco-friendly glass material, durable, safe and odorless. Standard capacity, it is clear and easy to know the situation. No bubbles, no burrs, smooth and rounded. More convenient to use for students in school laboratory when doing experiments in chemistry classFeatures- Color: Transparent . - Material: Glass. - Capacity: 250ml . - Glass filtering flask with upper tubulation is perfect for education, research, testing and other non-medical use.- Heavy duty glass uniform wall thickness distribution,durable and practical. - Widely used for education, chemistry, research, or life science applications. - Well made of premium borosilicate glass with minimal thermal expansion, giving relatively high resistance to temperature changes. - High temperature resistant and chemical resistant, practical tool in your laboratory.