Mfundo yaikulu yolekanitsa mpweya ndi kugwiritsa ntchito cryogenic rectification kuti ipange mpweya kukhala madzi ndikulekanitsa mpweya malinga ndi kutentha kwa evaporation ya gawo lililonse. Nsanja yokonzanso ya magawo awiri nthawi imodzi imapeza nayitrogeni yeniyeni ndi mpweya woyera pamwamba ndi pansi pa nsanja yapamwamba. N'zothekanso kuchotsa mpweya wamadzimadzi ndi nayitrogeni yamadzimadzi kuchokera kumbali ya evaporation ndi mbali ya condensation ya kuzizira kwakukulu motsatana. Kulekanitsa mpweya mu nsanja yokonzanso kumagawidwa m'magawo awiri, mpweya umalekanitsidwa koyamba mu nsanja yapansi kuti upeze nayitrogeni yamadzimadzi ndipo nthawi yomweyo umapeza mpweya wamadzimadzi wolemera ndi mpweya. Mpweya wamadzimadzi wolemera ndi mpweya umatumizidwa ku nsanja yapamwamba kuti ukonzedwe kuti upeze mpweya woyera ndi nayitrogeni yeniyeni. Nsanja yapamwamba imagawidwa m'magawo awiri: ndi cholowera chamadzimadzi ndi mpweya ngati malire, gawo lapamwamba ndi gawo lokonzanso, lomwe limakonza mpweya wokwera, limabwezeretsa gawo la mpweya, ndikuyeretsa chiyero cha nayitrogeni, ndipo gawo lapansi ndi gawo lochotsa zigawo za nayitrogeni mumadzimadzi, zolekanitsidwa kuti ziwongolere chiyero cha mpweya wamadzimadzi.