Refrigerant concentration limit / immediately dangerous to life or health in parts per million (volume per volume) and grams per cubic meter
ɹᵻfɹˈɪdʒɚɹənt kˌɑːnsəntɹˈeɪʃən lˈɪmɪt slˈæʃ ɪmˈiːdɪətli dˈeɪndʒɚɹəs tə lˈaɪf ɔːɹ hˈɛlθ ɪn pˈɑːɹts pɜː mˈɪliən vˈɑːljuːm pɜː vˈɑːljuːm ænd ɡɹˈæmz pɜː kjˈuːbɪk mˈiːɾɚ