Use the Bresser Phase Contrast Set for phase contrast microscopy with their Science IVM-401 inverted binocular microscopes. This set is comprised of two plan-achromatic phase contrast objectives: One 25x and one 40x, plus a holder and phase shifter filters for each objective magnification. Phase contrast microscopy allows you to examine living cells in their natural state without having to kill, fix, and stain them—allowing you to see and record the minute details and dynamics of ongoing biological processes in high contrast with sharp clarity.