The UltraBright-LED transilluminator is a blue light transilluminator designed for safely imaging fluorescently labelled gels (up to 20 cm x 16 cm) on the bench or inside G:BOX imaging systems. The UltraBright-LED uses two high-intensity LED arrays that produce uniform excitation at 470 nm and can illuminate dyes that excite at 420 to 480 nm. The system is suitable for visualizing small amounts of ethidium bromide and nontoxic DNA stains including UltraSafe Blue™ dye, SYBR Safe, and GelGreen, as well as protein stains such as SYPRO Ruby and Pro-Q Diamond.