U.S.SOLID 3L Liquid Nitrogen Container LN2 Tank Cryogenic Dewar Semen Flask with Straps 6 Canisters Carry Bag Can store up to 3.15 L of Liquid Nitrogen for up to 20 days Comes with 6 canisters fixed to straws for storage inside the container and a protective cover with straps Utilizes Dewar technology for insulation, only suitable for storage of liquid nitrogen, not for transport Lightweight, portable, and durable Used by doctors, hospitals, chefs, plumbers, gardeners, etc.