Air kupatukana unit ndi mtundu wa zipangizo zimene zimatenga mpweya monga zopangira, n'kumusandutsa madzi madzi ndi compressed ndi kuziziritsa kwa kutentha cryogenic, ndiyeno pang'onopang'ono analekanitsa mpweya, nayitrogeni, argon kapena zinthu zina zamadzimadzi ku mpweya wamadzimadzi ndi rectification. .Malinga ndi zosowa za ogwiritsa ntchito, zopangidwa ndi mayunitsi olekanitsa mpweya zimatha kukhala zinthu zamtundu umodzi kapena zingapo nthawi imodzi, zomwe zimatha kukhala gasi kapena madzi.