Graduated Vial Tube: It is easy for you to read the accurate liquid volume on account of its body has 1-5ml calibration
Suitable scene: It is not only excellent choice for school,hospital and scientific laboratory using,but also ideal for holding small items,such as ear studs,jewelry,pills,seeds,needles and more
Sealing ring: You do not need to anymore worry about liquid leaking on account of each screw cap matches rubber sealing ring