ðə mˈɪkstʃɚɹ ɪz mˌeɪd wɪððə sˈeɪm ɡˈæs blˈɛndɪŋ tɛknˈiːks jˈuːzd tə mˌeɪk nˈaɪtɹoʊks, ɛksˈɛpt ðæt fɔːɹ ˈɑːɹɡɑːks, ðɪ ˈɑːɹɡɑːn ɪz ˈædᵻd tə ðɪ ɪnˈɪʃəl pjˈʊɹ ˈɑːksɪdʒən pˈɑːɹʃəlfˈɪl, ɪnstˈɛd ʌv ˈɛɹ.
The mixture is made with the same gas blending techniques used to make nitrox, except that for argox, the argon is added to the initial pure oxygen partial-fill, instead of air.