scatterers manifesting themselves as an intensity "knee" region in the q-range 0.2 nm -1 < q < 2 nm -1 , which is otherwise absent in all other curves. We fitted this curve with a 2-level unified model proposed by Beuacage et al. (Eq. 2) , which we further modified under the assumption that the gyration radius of the largest structural units in our system is ∞ (lim Rg → ∞ = 0). This assumption is based on the fact that the scattering profile in region I for lim q → 0 continues to follow the q -A dependence. q /nm -1 Figure : NaOH series, 60 minutes. Model fit + model components. Data were fitted with Eq. 1 (solid line, pink); contributions of each component in the sum in Eq. 1 are also shown (dashed lines), according to the labels: the 1 st i.e. the surface fractal and the background (blue), the 2 nd i.e. Ornstein-Zernike (green), the 3 rd i.e. the 1 st peak (orange), the 4 th i.e. the second peak (purple). Specific fit parameter values can be found in the saxs parameter file (SI).