Igice cyo gutandukanya ikirere nubwoko bwibikoresho bifata umwuka nkibikoresho fatizo, bikabihindura muburyo bwamazi mukugabanya no gukonjesha ubushyuhe bwa kirogenike, hanyuma buhoro buhoro butandukanya ogisijeni, azote, argon cyangwa ibindi bicuruzwa byamazi biva mukirere cyamazi mukosora .Ukurikije ibyo abakoresha bakeneye, ibicuruzwa byo gutandukanya ikirere birashobora kuba ibicuruzwa bimwe cyangwa ibicuruzwa byinshi icyarimwe, bishobora kuba gaze cyangwa amazi.