Description: EverBrite TrueBlack® with NucSpot® 640 is a hardset antifade medium with Biotium's lipofuscin quencher and far-red nuclear counterstain (Ex/Em 649/668 nm) for one-step mounting, quenching, and counterstaining. Note: NucSpot® 640 has dim blue fluorescence, and may not be compatible with blue dyes.