The SNAP-Tag® Labeling Kit RED 2nd Generation is optimized for labeling and purification of proteins co-expressed with a N- or C-terminal SNAP-Tag®. The dye carries a Benzylguanine group that reacts with the SNAP-Tag to form a covalent bond. RED dyes are suited for Dianthus, Monolith NT.115 series and Monolith NT.Automated instruments with a RED detector (Nano and Pico). The kit contains material sufficient for 4 independent reactions.