Compare to mercury lamp, LED fluorescence illumination are benefits:
Specified excitation wavelength sufficiently excite fluorescence sample.
Without UV damage to users.
50,000 hours long working life LED light source, it''s 250 times by mercury lamp.
No warm up and waiting for cooling, in time switch-on to use.
Well done optical performance, no need to adjust light path.
Small and convenience to move.
Light intensity is controlled to avoid from fluorescence quenching.