The GNTBIO BANK series offers users a safer and smarter ultra-low temperature liquid nitrogen storage system with a a capacity of 15600-9450 2ml tubes and large off-bore open-ended design for easy storage of samples. Compatible with both gas phase and liquid phase storage modes, the system ensures uniform and stable temperatures throughout the entire tank, even when the lid is open for long periods of time. The temperature difference between the entire storage area and the top of freezing rack can be as low as -190℃.