Figure presents the Mie-Gans simulated normalized extinction spectrum of a gold nanospheroid (dash-dotted blue line) in comparison to an experimentally measured spectrum of an aqueous nanorod dispersion (orange line). Now, the core is not modelled as a simple Drude metal which disregards interband transitions, but with the dielectric function derived from measured literature data. Its short axis diameter was determined by transmission electron microscopy (TEM) to be 18 nm, the long axis is left adjustable to fit the plasmon resonance. A 1 nm thick citrate capping layer is included. The two resonances in both simulation and experiment correspond to the transverse (520 nm -short axis) and the longitudinal plasmon mode (600 nm -long axis) of the rod. The discrepancy in the magnitude of the transverse resonance is a known issue in EM nanorod simulations. We mainly attribute the differences to agglomerations of rods and secondary particles like spheres in the ensemble spectrum.