EXHIBIT 21.1 SUBSIDIARIES OF THE REGISTRANT 1. Molecular Devices GmbH, a corporation organized under the Laws of Germany.* 2. Molecular Devices Ltd., a corporation organized under the Laws of England and Wales.* 3. Molecular Devices Skatron, a corporation organized under the Laws of Norway.* 4. Nihon Molecular Devices, a corporation organized under the Laws of Japan.* 5. Cytion S.A., a corporation organized under the Laws of Switzerland.* 6. LJL BioSystems, a corporation organized under the Laws of Delaware.* 7. LJL BioSystems, Ltd., a corporation organized under the Laws of England and Wales.*