YDS-10-125 Compact and Lightweight Portable Cryogenic Liquid Nitrogen Containers For Medical Laboratory Equipment PROMED The Liquid Nitrogen Tank series is specifically designed for the long-term static storage of samples, with two types of products available: large capacity or ultra-long preservation period. These tanks use a round-shaped hanging bucket to store biological samples in cryovials or cryotubes, allowing users to select the appropriate model based on their specific needs. The tanks are mainly used for the preservation of active biological tissues, such as semen, embryos, stem cells, skin, internal organs, and vaccines.