Cryogenic Dewar Flasks, and Dippers Designed to safely store and transport low-temperature liquid gases where glass cannot be used. These dewar flasks are safe to use with liquid nitrogen and liquid oxygen. CHOOSE: • Blue Enamel Metal Cased with Lids & Handles (No Clamps) • Stainless Steel Cased with Lids & Handles (with Lid Clamps) • Insulated Stainless All-Steel Cased, No Lid, with Handle . . .(except DF-SCI500, no handle) • Stainless Steel Cased Wide-Top Low-Profile, No Lids or Handles