Our Flow Cytometry Size Calibration Kit has nonfluorescent particle-size calibration standards that provide a simple, accurate way to determine cell sizes by flow cytometry. The kit contains six suspensions of highly uniform polystyrene microspheres with the following diameters: 1.0μm, 2.0μm, 4.0μm, 6.0μm, 10.0μm and 15.0μm. All of the microsphere suspensions are provided in convenient dropper vials. View additional information for flow cytometry calibration and size reference beads.