Excellent material: test tubes with lids are made of high-quality reusable PP material, the connection between the lid and the tube is not easy to break, and the inner and outer walls are smooth, which is durable. Easy to use: the inner wall of centrifuge tubes is smooth, the samples are easy to store, liquid absorption and residue are reduced, the validity of detection and test results is ensured, and work efficiency is improved. Buckle design: 1.5ml micro test tubes use buckles design, which not only protects the liquid from evaporation or pollution, but also prevents the liquid from leaking. Conical base with snap-on lid, ideal for storing small samples. Clear scale: plastic test tube has a capacity of 1.5ml and the scale is clear and easy to see, making your experimental data more accurate. The transparent appearance makes it easier to distinguish between different liquids. Multi-scenario application: Widely used in laboratories, hospitals, scientific research institutions, schools, clinical chemistry, biochemical research, chemistry, etc., also suitable for samples, craft supplies, etc.