The HFS (R) 3.15L Cryogenic Container Liquid Nitrogen Ln2 Tank with 6 Canisters and Protection Cover is made of high-strength aviation aluminum alloy, ensuring that it can still function even if the storage tank is scratched or deformed due to improper operation. With a big vacuum space between the outer shell and the inner container, the nitrogen tank is equipped with a gas adsorbent to maintain a high vacuum environment. High-quality vacuum plugs enhance the tightness, while the lockable cover is immune to low-temperature, provides sound insulation, and reduces evaporation of liquid nitrogen. The enhanced handle has an ergonomic design for non-slip security and easy movement. This liquid nitrogen container is lightweight, easy to carry, has a long holding time of up to 193 days, and comes with 6 canisters and a protection cover. It is widely used for medical and scientific purposes such as the conservation of semen, embryos, spawn, vaccines, skin, organs, and other biological materials, as well as for industrial cryogenic processing, cooling of instruments and components, and cold therapy.