It is manufactured from high-quality natural polypropylene (PP) and features an external thread design to minimize contamination. It includes a stand foot for upright positioning and a dedicated writing area for easy sample identification. These sterile tubes are ideal for long-term storage of biological materials in cryogenic environments. Designed for laboratories that demand secure, contamination-free sample storage, each tube offers excellent durability and clarity. The pack includes 1000 tubes, making it perfect for high-throughput laboratories.