Nanoparticle Diameter: 150 nm Fluorescent Dye Label: IR750 Volume (@ 10 OD): 1 mL Gold nanoparticles functionalized with recombinant Protein G. Recombinant Protien G binds human, mouse, rat, goat antibody Recombinant Protien G does not bind human IgM, IgD, IgA These nanoparticles can be fluorescently labeled with an optional fluorescent dye tag Core Diameter: 4 nm – 200 nm Absorbance peak: 520 – 850 nm 5 kDa PEG spacer, 2 kDa PEG backfill Shelf life: > 4 months (4°C storage) Supplied as liquid suspension in PBS