Dewar Rapask yog lub tshuab nqus tsev insulated stainless hlau siab txog ntsha tsim rau kev cia rau kev cia rau kev khaws cia, thauj khoom thiab siv cov kua dej tsawg (ntsuas kub. Nws muaj cov protiamatic zoo heev thiab tuaj yeem tswj hwm qhov tsawg ntawm cov kua co2 ntev los tiv thaiv nws los ntawm vaporizing vim kub kom kub. Nyob rau tib lub sijhawm, nws kuj tseem tau nruab nrog ntau yam ntawm kev nyab xeeb li qub, kom ntseeg tau tias muaj kev nyab xeeb ntawm kev nyab xeeb, nws tuaj yeem tiv thaiv kev nyab xeeb ntawm kev nyab xeeb xws li tawg.