Applied Biosystems (ABI)
To induce fluorescence, the 7900HT system distributes light from an argon-ion laser excitation source to all sample wells. It then directs the resulting fluorescent emission through a spectrograph to a charge-coupled device (CCD) camera. Emission wavelenghts from 500-600 nm are monitored allowing the simultaneous detection of multiple fluorophores. The 7900HT instrumentation is seen below.