This laboratory boiling flask is manufactured with high grade glass material, ensure its durability and practicability, so that it can serve you for a long time. These laboratory bottles are convenient and easy- operation. perfect for laboratory, , school, etc. Features - Color: Transparent -Material:Glass - Size: 14.00X7.00X7.00cm/5.50X2.75X2.75in -Capacity:150ml -Very suitable for simple distillation, steam distillation, fractional distillation, boiling and more. -Transparent bottle makes it easy to observe the change and residual of inner liquid. -This kind of flask can ensure your safety, let the liquid be heated or boiled more evenly and not easily broken. -Widely used in education, chemistry, research or applications, etc. Convenient and easy to use. -Use premium glass material, strong and , which has high temperature resistance and easy to clean. Package list: 1 x flask with Stopper