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PEG Iron Oxide Nanoparticles The SMG is a group of water soluble iron oxide nanoparticles with amphiphilic polymer and PEG coating. There is no linkable reactive group on the surface of nanoparticles. The zeta potential of SMG is from -10mV to 0. The thickness of the total organic layers is about 6 nm. The hydrodynamic size of the nanoparticles is about 12-14 nm larger than their inorganic core size measured by TEM.The colloidal stability of SMG is exceptionally high. It is stable in most buffer solutions in the pH range of 4-10 and can survive autoclaving process (121 °C for 30 min). Product Name Description Pricing SMG-10 PEG Iron Oxide Nanoparticles, 10 nm Pricing SMG-20 PEG Iron Oxide Nanoparticles, 20 nm Pricing SMG-30 PEG Iron Oxide Nanoparticles, 30 nm Pricing