1.Wide Application: Centrifuge tubes can storage solid or liquid material. Widely used in laboratory, food coloring, clinical chemistry, research institution, crafts and so on.2.Great Sealing Performance: Mini test tube with lid can reduce the pollution of samples and avoid liquid volatilizing and leaking.3.Material: Mini sample vial is made of material, security and environmental protection. Smooth surface of pipe wall can reduce liquid absorption and residue, ensuring the validity of experimental result.4.Transparent: 1.5ML conical microtube is clear with standard scales. Convenient for you to distinguish different chemicals and help you use standard dose to ensure accuracy of test.colour:Transparentmaterial:plasticsize:4cmPackage Contents:2000 * test tubeOnly the above package content, other products are not included.Note: Light 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.