40nm NHS-Activated Gold Nanoparticle Conjugation Kit (10 Reactions)Cytodiagnostics 40nm NHS activated Gold Nanoparticle Conjugation Kit have been optimized for high efficiency one step covalent conjugation of proteins and other primary amine containing ligands to gold nanoparticles. The kit contains ready to use pre made mixtures. No activation or manipulation of the gold nanoparticles is required prior to conjugation, which often results in poor performing conjugates. Simply mix your protein with the pre activated