[Transparent Plastic Reagent Tube] These test tubes are made of transparent plastic, non-toxic, odorless, and leak-proof, allowing clear visibility of contents. The screw cap features a secure closure that is durable for long-term use and keeps contents safe and protected. Plastic test tubes are more impact-resistant than glass alternatives. [Easy to Clean and Reusable] These 100 ml test tubes with screw caps are easy to clean and reusable. Simply wash with mild soap and water to prepare for reuse. This helps save time and resources, offering a sustainable solution. [Good Sealing, Moisture-Resistant, and Leak-Proof] Equipped with screw caps that can be tightly secured to prevent spills, these test tubes are suitable for storing liquids and other materials. They are moisture-resistant, airtight, and help prevent leakage, providing reliable protection. [Suitable for Storing Lotions] These plastic test tubes are ideal for storing lotions, creams, cosmetic samples, liquids, gels, and other beauty products. Their compact size makes them convenient for carrying in a handbag or backpack, offering practical storage and portability. [Multifunctional Application] These plastic test tubes can be used to store small craft items such as beads, sequins, and pins. They are also suitable for organizing food items like nuts, cereals, spices, candies, salt, chocolate pieces, and more. Ideal for portioning, sampling, and storage in various settings. Color: Transparent Material: Plastic Package Contents: 15 x Test Tube Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.