Used  Worthington model  CX100 dewar /Dry Shipper, 4.1 liters of liquid nitrogen adsorbed.  lot con5/2top

Cryo Express (CX). Cryo Express (CX) “dry shippers” are designed to safely transport a variety of materials at cryogenic temperatures. The unique adsorbent material prevents a liquid spill if the unit is tipped over. Storage temperature inside the shipping cavity remains at approximately -190˚C until the liquid nitrogen evaporates from the absorbent material.