Cryo dewars, foam

Foam dewars provide a neat and handy alternative to heavier vessels or the commonly utilized styrofoam shipping containers. The special foam material is chemically inert and mechanically durable enough to be exposed directly to liquid nitrogen, without leaking or degrading. Patented design makes the foam vessel easier to handle and safer to use than a traditional low profile glass dewar. Because of its lower thermal mass, a foam vessel will cause less liquid nitrogen boiling when it is filled. The foam surface will also accumulate less frost. As a result, less liquid nitrogen is consumed.

Available as 500ml, 800ml and 1400ml Cryo Cups featuring convenient protruding handle, a Tall (1800ml) vessel, and a Mini (130ml) vessel.

The Mini Foam Dewar is our smallest foam dewar. The cylindrical cavity in this vessel is 5 cm in diameter by 8.9 cm deep, so that it easily holds 130 ml and a maximum volume of 175 ml of liquid nitrogen. Perfect for applications that require a small quantity of cryogenic liquid.

The Standard Foam Dewar can hold 800 ml of liquid nitrogen. It has been designed to replace large glass dewars, because the foam has superior durability, safety, insulating properties.
The standard vessel shape is circular, with a protruding handle. Each dewar comes with a matching foam lid to insulate the contents from ambient air.
Dimensions of the cylindrical cavity in this vessel are 15 cm in diameter by 7 cm in depth.

The Small Foam Dewar has the same basic shape and features as the Standard Foam Dewar but a smaller diameter cavity. Dimensions of the cylindrical cavity are 11.5 cm in diameter by 7 cm in depth, easily holding 500 ml of cryogenic liquid.

The Large Foam Dewar is a slightly bigger version of the popular standard vessel. Dimensions of the cylindrical cavity in this vessel are 16 cm in diameter by 9.5 cm in depth, so that it easily holds 1400 ml of liquid nitrogen.

The Tall Foam Dewar was initially developed for short term storage of canes of protein crystallography samples. The tall vessel, like the standard vessel, offers excellent durability and safety. Its insulating properties are comparable to those of conventional stainless steel and glass dewars, at a fraction of the cost.
This vessel has a 9 cm diameter cylindrical cavity, 32 cm deep, which gives it a capacity of 1800 ml liquid nitrogen.