The cylinders are particularly suitable for school science experiments because they are easy to use for any age group, and they can put up with the demands placed on by enthusiastic young scientists. The high quality of the glass and the ease of cleaning each cylinder after use with the included brushes means the Measuring Cylinder Set is designed for long-term use. Simply clean the cylinders after use, safely , and you can continue to use for as long as you need to and for as many experiments as you . When carrying out tests and experiments, you to be to trust your equipment completely. Not only are the cylinders in this set highly accurate down to the milliliter, they are also made from tough lab-grade glass that is resistant to heat. Apply to: The measuring cylinders are perfect for a wide range of , including professional laboratories, and they are particularly suitable for school science experiments due to their solid and ease of use colour:Transparent Material:glass Package Contents: 6*graduated cylinder 2*cleaning brush（With box） Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.