Typically, diffusion experiments are of two types: through-diffusion or indiffusion type . In through-diffusion experiments, the measurements are nondestructive, but the species concentrations are measured only at the outlet boundary without access to the interior of the considered sample. A fit of the experimental data is conducted once the mass flux reaches a steady state, which typically occurs only after several weeks or months. Inverse modelling is implemented to fit the experimental results based on 1D physical models at the end of the experiment. In-diffusion experiments can last several days or weeks and the interpretation of the results is done post-mortem (in a destructive way) after the completion of the experiment. The domain of interest is sliced in several pieces and the species concentrations are measured at specific locations. Subsequently an inverse modelling based on 1D or 2D models is applied to fit the experimental data . In both cases, the diffusion coefficient can be determined only after the end of the experiment.