The microsphere populations in the QuantumPlex™M five-bead kits are encoded with different intensities of Starfire Red™. Starfire Red™ is a fluorescent dye with unique characteristics that make it ideal for multiplexing applications. The dye's broad excitation band allows it to be excited at a number of wavelengths, and it emits in the FL3 channel (685nm) with very little carry-over into FL1 or FL2, leaving othe detectors available for determination of positive binding events via common reporters such as FITC and PE.

QuantumPlex™M is also available as a Single Population (SP). For Flow Cytometry Resources, visit the Bangs Flow Blog.