For measuring the fluorescence or phosphorescence from a 6-, 12-,24-, 48-, or 96-well plate in either the X or Y direction or for luminescence micro densitometry of TLC plates and electrophoresis gels. Controlled by the computer. Silica excitation fiber, glass emission fiber. May require LS-50B Upgrade Kit (P/N L2108529). Requires, but does not include, installation by a PerkinElmer Service Engineer.