
◎ The cryotubes are made of polypropylene (PP) conforming to USP Class VI standards. They are single-use consumables specially designed for biological sample storage and meet ISO 10993 biocompatibility standards.
◎ Resists low temperatures down to -196°C in the liquid nitrogen vapor phase (the gaseous environment above liquid nitrogen).
◎ The externally threaded cap of the external-thread cryogenic tube reduces the risk of sample contamination.
◎ The tube cap is upgraded with a dual-color injection molding process. No cracking occurs under standard operation. Excellent sealing performance is guaranteed even at the lowest storage temperature, ensuring the safety of samples and laboratory personnel.
◎ The textured design of the cap facilitates screwing. The cap is equipped with multi-color insertable color codes for easy identification.
◎ Both the tube cap and tube body are manufactured from PP raw materials of the same batch and model. Identical expansion coefficients ensure stable sealing performance of the product.
◎ Barcodes and dual numeric codes support digital sample management and easy identification, with a large marking area for convenient labeling.
◎ The rounded bottom design facilitates liquid concentration and minimizes residue.
◎ Available in general grade and PCR grade to meet different requirements. PCR-grade products are produced in a cleanroom, RNase-free, DNase-free, endotoxin-free, and pyrogen-free. Sterilized by irradiation.

| REF. | Material | Outer dimension | Temperature range | Qty in bag | Qty in case | Detailed information | Original REF. |
| KJ335-7 | PP | Ø9×5mm | -196~121℃ | 1000 | 30000 | Multi colour cap | 102 |