I have conjugated biotinylated antibody on a Miltenyi antibiotin antibody coated iron beads, which originally were meant to be used in cell separation. But I want to use it as a nanoparticle platform to deliever dual-antibody in animal model. How can I separated the beads from the solution then. If by centrifuge, what`s the centrifugal force and time I should set?

Because I`m new to nanotechnology, I wonder what`s the proper way to determine the concentration of the particles?

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