https://doi.org/10.1351/goldbook.12257
Volume of the hydrodynamically equivalent sphere.
Note: The molar equivalent hydrodynamic volume determined using measurements of intrinsic viscosity, \([\eta]\), is \(V_{\eta}\), where \(V_{\eta} = [\eta]M/N_{\rm{A}}\), with \(M\) the molar mass and \(N_{\rm{A}}\) the Avogadro constant.