They are perfect for storing tiny specimens. These tubes are designed to withstand the rigors of centrifugation, ensuring that your samples remain intact and undisturbed Sealing:The centrifuge tubes are with snap closure, they are not easy to leak and safe to use. Falcon™ 15 mL Conical Centrifuge Tubes Polypropylene; 15 mL; No Rack Plastic Vials HUAZIZ Pack Of 500 Micro Centrifuge Tubes, , Fabric Reaction Vessels SAMPLE COLLECTION:Centrifuge tubes are commonly used for collecting samples in molecular biology, chemistry, biochemistry and other fields. 500pcs Centrifuge Tubes, 0.07oz, Reaction , Fabric Capsules, Transparent with Lid, for Test Storage of Common Liquid Samples. 1K soldSourced from. (34K sold Storage Application Ideal for storing liquids, powders and small items such as beads, bath salts, plants, etc. They are also graduated and clear, which facilitates accurate sampling.