Spearlab Foam Tall Dewar

A replacement for upright glass or stainless steel Dewars, ideal for short-term storage of canes or pucks. Cavity 3.5 inches in diameter by 12.3 inches deep, holding 1800 ml. Tapered octagon outer profile.

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.