This vessel holds 800 ml of liquid nitrogen. It replaces the old-fashioned foam dewar to hold pucks during sample manipulation. It is also used to house the SubAngstrom clipping station (sold separately). The robust design is extremely durable. The vessel is rectangular in shape and can hold 4 pucks, or a clipping station and two pucks. Each dewar comes with a matching lid to insulate the contents from moisture in the air.