Ductive materials: Our tube is made of high-quality and high-purity materials. Easy to mark: Plastic centrifugal tube also has a designated white area, which is easy to mark and recognize. This small labeling tube function is very convenient to stick labels. Accurate scale: The scale of the centrifugal tube is also printed on the side of the test tube. This graduation thesis is accurate and easy to read. Measurement is convenient for scientific applications. Introduction to leak -proof laboratory: The centrifugal test tube is equipped with a cover, the seal is firm, and leaks are not allowed. These containers can be placed on the shelf, repeatedly, safe and safe. Sterilizer: These plastic tubes are by , and it is convenient to use. They can safely be used in applications, including solids, liquids, powder, seeds, pills and granular objects. size: about 12cm Material: plastic colour: transparent+blue Package Contents: 200 x Conical centrifuge tubes 15mL Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.