ˈɑːɹɡɑːn ɪz fˈɑːɹmˌoːɹ nɑːɹkˈɑːɾɪk ɐbˌaʊt tˈuː.θɹˈiː tˈaɪmz mˈoːɹ ðɐn ðə tʃˈiːpɚ ænd mˈoːɹ ɹˈɛdili ɐvˈeɪləbəl nˈaɪtɹədʒən æt dˈɛpθ, sˌoʊ ɪt lˈuːzᵻz ˈaʊt tə nˈaɪtɹədʒən ɪn ˈɔːl ɹˈoʊlz æz ɐ pɹˈaɪmɚɹi bɹˈiːðɪŋ ɡˈæs.
Argon is far more narcotic (about 2.3 times more) than the cheaper and more readily available nitrogen at depth, so it loses out to nitrogen in all roles as a primary breathing gas.