Cholinga: Sieve ya Carbon Molecular ndi chopangira chatsopano chomwe chinapangidwa m'ma 1970, ndi chinthu chabwino kwambiri chosakhala polar carbon, Carbon Molecular Sieves (CMS) chomwe chimagwiritsidwa ntchito kulekanitsa nayitrogeni wowonjezera mpweya, pogwiritsa ntchito kutentha kwachipinda chotsika kutsika kwa nayitrogeni, kuposa kuzizira kwanthawi yayitali. Kuthamanga kwa nayitrogeni kumakhala ndi ndalama zochepa zogulira, Kuthamanga kwakukulu kwa nayitrogeni komanso mtengo wotsika wa nayitrogeni. Chifukwa chake, ndi makampani opanga uinjiniya omwe amakonda kukakamiza kugwedezeka (PSA) kupatukana kwa nayitrogeni wolemera, nayitrogeni uyu amagwiritsidwa ntchito kwambiri mumakampani opanga mankhwala, mafuta ndi gasi, mafakitale amagetsi, mafakitale azakudya, mafakitale a malasha, mafakitale ogulitsa mankhwala, mafakitale a chingwe, zitsulo. kutentha mankhwala, mayendedwe ndi kusunga ndi zina.