Throwing out the old mercury lamp and exchanging it for the pE-4000 on one of our live cell wide field microscopes has been an astounding success! It allowed us to cheaply breathe new life into old equipment. Suddenly, we were able to offer users uninterrupted extended live cell experiments of 100+ hours, without worrying about brightness fluctuations, lamps burning, room heating, etc. Also, users have reported markedly reduced bleaching and phototoxicity in their samples, both from the prokaryotic and the eukaryotic research fields. As a facility manager I am pleased with the instrument's ease of use, and shallow learning curve for new users. Taken together with reduced overall microscope maintenance, the pE-4000 has already saved me a substantial amount of time in my daily work life, and improved the quality of our services at the same time.