40nm NHS-Activated Silver Nanoparticle Conjugation Kit (3 Reactions)Cytodiagnostics 40nm NHS activated Silver Nanoparticle Conjugation Kit have been optimized for high efficiency one step conjugation of proteins and other primary amine containing ligands to silver nanoparticles. The kit contains ready to use pre made mixtures. No activation or manipulation of the silver nanoparticles is required prior to conjugation, which often results in poor performing conjugates. Simply mix your protein with the pre activated NHS