Falcon™ 4-well In Vitro Fertilization (IVF) Plates are made of nonembryotoxic, noncytotoxic, tissue-culture treated polystyrene. The virgin crystalline polystyrene is optically clear and tissue-culture treated for a more hydrophilic surface. Unique lid provides access to 2 wells at a time while 2 remain covered. Certified sterile, nonpyrogenic and non-embryotoxic. Certificates with test results are available.