Gibco® FluoroBrite™ DMEM features a background fluorescence that is comparable to PBS and 90% lower than that emitted by standard phenol red-free DMEM. Formulated to include the required nutrients for routine cell culture when supplemented with 10% fetal bovine serum and 4 mM L-glutamine or GlutaMAX™ Supplement, FluoroBrite™ DMEM is designed to enhance the signal-to-noise ratio of fluorophores, enabling researchers to visualize even the weakest fluorescent events in an environment that promotes optimum cell health.