AAT Bioquest's iFluor® dyes are developed for labeling proteins, in particular, antibodies. These dyes are optimized to have minimal fluorescence quenching effect on proteins and nucleic acids. iFluor® 700 dyes have fluorescence excitation and emission maxima close to 690 nm and 710 nm respectively. These spectral characteristics make them an excellent alternative to Alexa Fluor® 700 (Alexa Fluor® is the trademark of Invitrogen). ReadiLink™ labeling kits essentially only require 2 simple mixing steps without a column purification needed. iFluor® 700 SE used in this ReadiLink™ kit is reasonably stable and shows good reactivity and selectivity with protein amino groups. The kit has all the essential components for labeling ~2x50 ug antibody. Each of the two vials of iFluor® 700 dye provided in the kit is optimized for labeling ~50 µg antibody. iFluor® 700 SE protein labeling kit provides a convenient method to label monoclonal, polyclonal antibodies or other proteins (>10 kDa) with the iFluor® 700 SE.