Features 1、Clear Scale: These centrifuge tubes have a frosted surface and a clear and accurate volume scale for easy reading of your numbers. 2、Snap Cap: The beveled flat cap design of this centrifuge tube opens and closes more comfortably, giving you a good pressing experience. 3、Plastic Material: This centrifuge tube body is made of tough material and is highly transparent for easy sample observation. 4、Good Sealing: The clear sealing edge of the centrifuge tube maintains a good sealing, further increasing the usability of the tube. 5、Sufficient Quantity: This set of centrifuge tube set has 500PCS centrifuge tubes, which is sufficient quantity to meet your large number of experimental needs. Specification Item Type: Mirco Test Tube Material: Plastic Size: 1.5ml Weight: Approx. 800g / 28.2oz Features: Plastic test tube with pointed bottom with cap, sturdy and stable, easy to use, resistant to high temperature and pressure, beveled flat cap design to open and close more comfortable, good pressing experience, clear sealing edge to maintain a good seal, the expansion of the sealing range, further increase the sealing of the test tube. Package List 500 x Mirco Test Tube