This product is prepared by labeling highly cross-adsorbed donkey anti-sheep IgG (H+L) with CF568. CF568 is a red fluorescent dye with an excitation spectrum optimally matching the 568 nm line of the Ar-Kr mixed-gas laser. Antibody conjugates of the dye are much brighter than those of Alexa Fluor® 568. In addition, the photostability of CF568 is superior to that of Alexa Fluor® 568, making CF568 a much better choice for demanding applications, such as confocal microscopy and single molecule imaging. To minimize cross-reactivity, the antibody has been adsorbed against chicken, guinea pig, Syrian hamster, horse, human, mouse, rabbit, and rat serum.Compatible with the NucleoCounter® NC-3000™.