Cyanagen provide the same fluorescent label with different charge values (anionic, cationic, zwitterionic and neutral). It is thus easy to find the most suitable product among the CHROMIS series, starting from the desiredabsorption/emission peak maximum and subsequently decide both the reactivity and charge properties.

An optimal selection is based on reviewing the spectral properties of each dye, in relation to the instrument to be used. Each instrument has features to consider such as excitation source, optical filters and sensitivity. Therefore, the choice of the right CHROMIS depends on the individual assay as well on the type of instrument.