Iplusmile 50 Plastic Scientific Test Tubes with Lids, 16mm X 100mm, Wide Plastic Clear Containers, Leak-Proof, for Storage and Scientific Experiments

[Material] Plastic test tubes made of polystyrene, free of bubbles, impurities, and resistant to high and low temperatures. [Size] Tube diameter: 0.62in/0.6cm; Maximum length: 3.9in/10cm. [Sealing] Features a snap-on lid for leak-proof, easy-to-use, flexible closure for easy handling. [Storage Applications] Ideal for storing liquids, powders, beads, bath salts, plants, and other small items. [Sample Collection] Widely used for sample collection in molecular biology, chemistry, and biochemistry. Suitable for a variety of applications, from laboratory experiments to collecting specific amounts of liquid at home. Each test tube features a plastic stopper for a secure seal.