Building a -190℃ Safety Barrier for Biobanks

In the biomedical field, every stem cell, plasma, or embryo sample carries the hope of scientific breakthroughs and clinical translation. Ultra-low temperature storage is crucial for protecting these "sparks of life." Heyi liquid nitrogen cryogenic freezers, with their large capacity, dual-mode storage, and intelligent safety protection, have become a reliable choice for biobanks, research institutions, and medical facilities.

Equipped with a partially open structure, its effective volume ranges from 350L to 1800L, easily accommodating tens of thousands of samples. The segmented container opening design balances large capacity with high vacuum, significantly reducing liquid nitrogen consumption and providing stable protection for long-term storage.

The equipment supports both gas phase and liquid phase dual-mode storage: in gas phase mode, the upper ambient temperature inside the container is stabilized at -190℃, preventing direct contact between samples and liquid nitrogen and reducing the risk of cross-contamination; the liquid phase mode meets even more extreme low-temperature requirements, providing a one-stop solution for the preservation of diverse samples such as stem cells, sperm and eggs, and tissues and organs.

A comprehensive protection system from hardware to software ensures safer storage. The patented liquid level control system displays high and low liquid levels in real time, automatically alarming and replenishing liquid in case of excessively high/low levels or overtemperature. It features a remote monitoring port and global SMS alarm function, enabling 24/7 unattended operation. The patented external rotation extraction design reduces personnel contact with liquid nitrogen, and the one-button defogging function makes sample storage and retrieval clearer and more convenient.

The all-austenitic stainless steel construction and high-vacuum multi-layer insulation technology ensure a vacuum service life of at least five years. Wear-resistant casters facilitate movement and fixation. Dual recording functions of event logs and graphs ensure traceability of all operating parameters and alarm history, providing strong support for the rigor of research data.

Whether for the long-term preservation of umbilical cord blood stem cells or the development of CAR-T cell therapy, the Heyi liquid nitrogen cryogenic freezer lays a solid foundation for the safe operation of biobanks, allowing each precious sample to await its future awakening in a -190°C "hibernation chamber."