Both of those the dimensions overestimation as well as the significant mistake do not make it possible for, in our belief, to correctly interpret the experimental data in Fig. 5. A more exact definition on the hydrodynamic diameter can be done from direct measurements of the diffusivity of MNPs at https://lingjunbio.quora.com/Lnjnbio-Magnetic-Beads-for-Plasmid-DNA-Extraction-and-Purification-160024-Home-https-www-lingjunbio-com-Products