I-aperture ye-molecular sieve 5A imalunga ne-5 angstroms, ebizwa ngokuba yi-calcium molecular sieve.Ingasetyenziswa kuxinzelelo lwezixhobo ze-adsorption ze-oxygen-making kunye ne-hydrogen-making industry.
Umgaqo-nkqubo wokusefa kweemolekyuli unxulunyaniswa ikakhulu nobungakanani bepore yeesefu zemolekyuli, wZinokuthengisa iimolekyuli zerhasi ezinobubanzi bemolekyuli buncinci kunobukhulu bepore.Ubukhulu besayizi yepore, ubukhulu be-adsorption umthamo.Ubungakanani be-pore buhluke, kwaye izinto ezihluzwayo kwaye zihlulwe nazo ziyahluka.Xa zisetyenziswe njenge-desiccant, i-molecular sieve inokuthatha ukuya kwi-22% yobunzima bayo kumswakama.