The PhotoFluor II combines a powerful self-aligning 200W metal halide lamp with a sputtered IR-blocking optic to deliver exceptional light output from 340nm to 650nm. The intensity of the PhotoFluor II exceeds that of a typical 120W lamp and rivals that of a standard 100W mercury arc, without the problems associated with arc lamps. The PhotoFluor II also offers unsurpassed output stability over both the short and long term, enabling truly quantitative fluorescence imaging.