I-Optical brightener i-OB Fine iwuhlobo lwenhlanganisela ye-benzoxazole, ayinaphunga, ilukhuni ukuncibilika emanzini, inyibilika kupharafini, emafutheni, kuwoyela wamaminerali, i-wax nezincibilikisi ezivamile eziphilayo.Ingasetshenziselwa ukwenza mhlophe amapulasitiki e-thermoplastic, i-PVC, i-PS, i-PE, i-PP, i-ABS, i-Acetate fiber, upende, ukugqoka, uyinki yokunyathelisa, njll. khipha ukucwebezela okumhlophe okuluhlaza okwesibhakabhaka.