4 Liter Liquid Nitrogen LN2 Dewar Vacuum Flask. The item "4 Liter Liquid Nitrogen LN2 Dewar Vacuum Flask" is in sale since Monday, August 12, 2019. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Other Healthcare, Lab & Dental". The seller is "pwistamarsilio" and is located in Mahopac, New York. This item can be shipped to United States.