40nm Ni-NTA Gold NanoparticlesComposition: Ni NTA gold nanoparticles Core Size: 40nm Absorption max: 530nm Optical Density (OD): 50 Particles per ml: 3. 58E+12 Ni NTA Surface Density: ~1 nm2 Formulation: Supplied in USP grade purified water Properties Cytodiagnostics Ni NTA functionalized gold nanoparticles are suitable for binding of proteins with a C , or N terminal 6X His tag. These gold nanoparticles allow for rapid generation of gold conjugates of any histidine tagged protein