External Shutter Box

The computer- controlled Olis external shutter box can be used both to protect photolabile samples from the excitation or the measuring beam while readings are not being made, and to turn a steady-state lamp into a pulse lamp with pulse rates to 40 Hz. The shutter box can be positioned between the sample compartment and the excitation monochromator to protect photolabile samples from the exciting beam during fluorescence work and between the DeSa monochromator and the sample compartment to protect photolabile samples from the measuring beam. The small (14-mm) aperture provides a rapid (to 40 Hz) open/ close cycle