It are high-quality screw-top tubes designed for secure sample storage and efficient tracking in laboratory environments. Constructed from virgin Class VI medical-grade polypropylene, these tubes feature a V-bottom design for optimal sample retrieval. Each tube includes a permanent, laser-etched 2D barcode on the bottom, ensuring precise sample identification and compatibility with automated systems. The TRK-S designation indicates tri-coded tubes, incorporating 2D, 1D, and human-readable codes for versatile tracking options. These tubes are sterile and PCR-ready, making them ideal for biobanking, clinical research, and other demanding applications.