Vari Fluor 555 SE (VF 555 SE) is a dye marker of the Vari Fluor SE series (Ex/Em=550 nm/561 nm) . The Vari Fluor SE series of dyes are a class of fluorescent dyes containing NHS ester groups used to label free amines (-NHX) on antibodies, proteins, peptides, amine-modified oligonucleotides and other biomolecules.
