40nm Carboxyl (carboxyl-PEG3000-SH) Gold NanoparticlesComposition: Carboxyl gold nanoparticles Core Size: 40nm Absorption max: 530nm Optical Density (OD): 50 Particles per ml: 3. 58E+12 Carboxyl Surface Density: ~1 nm2 Formulation: Supplied in USP grade purified water Properties Cytodiagnostics PEGylated Gold Nanoparticles with carboxyl functional groups are made using a unique proprietary protocol resulting in particles with superior size distribution and shape compared to the leading competitor and are