Poliomyelitis virus type 1, Mahoney strain 40 D antigen units Poliomyelitis virus type 2, MEF-I strain 8 D antigen units Poliomyelitis virus type 3, Saukett strain 32 D antigen units Preservative : 2-phenoxyethanol 2.5 mg Formaldehyde 12.5 mcg * Cultivated on Vero Cells