Gas ɗin zafin jiki na iska ya dace da isar da matsakaici don iskar oxygen, nitrogen, argon, da sauran ƙananan zafin jiki da ƙarancin iskar gas kamar tauraruwar aluminum finned bututu mai dumama gas, ruwa yana turɓaya cikin iskar gas a cikin iskar gas ɗin da ake buƙata.