A range of low-cost utility Dewar flasks specially designed for laboratory, hospital and industrial use. Safe for use with all liquid gases and ideal for cold traps. High-quality borosilicate glass inner flasks, ultra-low evacuated in attractive blue stove-enameled tough steel outer container. These rust and corrosion resistant Dewars have cushioned bases and are available with wide or narrow necks, with a fold down handle and insulated lid.