Nalgene economical freezing container is easy to use—all you need is 100% isopropyl alcohol and a freezer. Great for small labs with occasional cryopreservation needs. Durable, stackable container withstands repeated freezing and thawing. Polycarbonate container includes a 120-mm high-density polyethylene (HDPE) closure, a HDPE vial holder, and a foam insert. Vial holder keeps vials away from alcohol preventing sample contamination and label smudging. Vial holder also floats—leave vials in the holder and place in a water bath to thaw. Molded-in numbers allow easy vial identification.