The size of bitumen particles is usually between 0.1 and 50 µm with a main fraction between 1 µm and 10 µm.
ðə sˈaɪz ʌv bɪtˈuːmɛn pˈɑːɹɾɪkəlz ɪz jˈuːʒuːəli bᵻtwˌiːn zˈiəɹoʊ.wˈʌn ænd fˈɪfti mˌaɪkɹoʊˈɛm wɪð ɐ mˈeɪn fɹˈækʃən bᵻtwˌiːn wˈʌn mˌaɪkɹoʊˈɛm ænd tˈɛn mˌaɪkɹoʊˈɛm.