Advantage: 1.The round bottom plastic centrifuge tube is made of plastic material, which is odorless and , clear and easy to observe, not easy to break and will not slip during use. 2. The Centrifuge tubes also have graduation printed on the side of the test tube. This scale is accurate and easy to read, making measurement convenient. 3. The Centrifuge tubes are equipped with leak-proof snap cap, which is easy to open and close, with a firm seal and is not easy to leak samples. Instruction: Easy to use. Prepare the sample, slowly pour the liquid sample to be tested into the centrifuge tube, and seal the centrifuge tube with the matching centrifuge cap. Application: The plastic centrifuge tubes are widely used in biotechnology and life science, environmental research, Removal of microorganisms from solutions or separation of protein in sample matrices, etc. They can also be used to separate and prepare samples, including the preservation of solids, liquids, powders and granular objects. NOTE: Please choose centrifuge tubes of appropriate sizes according to experimental needs and mark them to avoid confusion. size: 42 x 10.5mm Material: plastic colour: brown Package Contents: 1000 x Centrifuge Tubes 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.