 For example, DLS is a low-resolution method that is not suitable for measuring polydisperse samples, while the presence of large particles can affect the size accuracy.Other scattering techniques have emerged, such as nanoparticle tracking analysis (NTA), which tracks individual particle movement through scattering using image recording.NTA also measures the hydrodynamic size of particles from the diffusion coefficient but is capable of overcoming some of the limitations posed by DLS.