ʻO nā mea nui i ka lewa he nitrogen a me ka oxygen, me ka hoʻohana ʻana i ka mahana ambient, nitrogen a me ka oxygen i ka lewa i ka zeolite molecular sieve (ZMS) adsorption hana ʻokoʻa (hiki i ka oxygen ke hele a me ka adsorption nitrogen), hoʻolālā i ke kaʻina kūpono, a hana i ka nitrogen. a me ka hoʻokaʻawale ʻana o ka oxygen e loaʻa ai ka oxygen.