DescriptionMade of eco-friendly high borosilicate glass material, durable, safe and odorless. Standard capacity: clear scale, easier to identify for accurate measurement. No bubbles, no burrs, smooth and rounded. More convenient to use for students in school laboratory when doing experiments in chemistry class.Features- Color: Transparent.- Material: Glass. - Size: 18.00X10.80X10.80cm/7.07X4.24X4.24inch. - Capacity: 100ml, 250ml, 500ml. - Designed with standard graduations, flat bottom, and extra-large marking area. - 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.