Spearlab Foam Mini Dewar

The smallest Spearlab foam dewar, the cylindrical cavity is 2 inches in diameter by 3.5 inches deep, holding up to 175 ml of liquid nitrogen. Perfect for dermatology and other applications that require a small quantity of cryogenic liquid.

Spearlab foam dewars are effective, durable vessels for handling liquid nitrogen and cryogenic materials, widely used for x-ray crystallography samples and other cryogenic applications. Unlike conventional glass and stainless steel Dewar flasks that depend on a vacuum layer, Spearlab foam dewars use a fine closed-cell foam for insulation — chemically inert and mechanically durable enough to be exposed directly to liquid nitrogen without leaking or degrading.