Dewar flask
A vacuum flask or Dewar flask has the remarkable capacity to hold extremely cold liquids like liquid nitrogen for a considerable length of time. The boiling point of liquid nitrogen is 77K compared to a room temperature of about 300K. You can hold liquid nitrogen for about a day without even a cover on the flask! Clearly, the flask is able to effectively block heat transfer from the outside either through the walls or through the open top.
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Dewar flasks in stainless steel:
Our dewar flasks are rust-free, non-corrosive, hygenic and strong. Double-walled boroscilicate glass, vacuum pumped and silvered insures efficient storage, transport and use of liquid nitrogen and dry-ice. These Dewar Flasks have an all-stainless steel vented lid with self-contained insulation. Lid-clamps secure the lid for safe transportation and minimizing spillage.
Available in 4 capacites/sizes; 1000 - 2000 - 4500 - 7000 ml
Dewar flasks in enamelled steel:
Blue metal cased economy Dewar Flasks are rust and corrosion resistant. Double-walled silvered boroscilicate glass, vacuum pumped insures efficient storage, transport and use of liquid nitrogen and dry-ice. Lid vent safely vents off evaporating gas. Safe for use with all liquid gases and dry-ice.
Available in 4 capacites/sizes; 1000 - 2000 - 4500 - 10000 ml