CytoFLEX Ready to Use Daily QC Fluorospheres is a suspension of 3 µm fluorescent microspheres, which may be used for daily verification of the flow cytometer's optical alignment and fluidics system. This product is provided in a pre-diluted, ready-to-use format, with a fluorescence emission between 355 nm to 800 nm when excited at: 355 nm, 375 nm, 405 nm, 488 nm, 561 nm, and 638 nm. The mixture is suspended in an aqueous medium containing surfactants and stabilizers. Click here for CytoFLEX Ready to Use Daily QC Fluorospheres Instructions for Use. This product replaces the CytoFLEX Daily QC Fluorospheres, B53230, and should be used with the CytoFLEX cytometer platform.