Also, I just noticed this in the tooltip for calculation of the SCF. For most small particles, the sqrt(particle size) will be 10 or even lower, and based on this guidance the default of 23 would only seem appropriate for very large particles. Is this correct or is there a typo? Perhaps having the user input the particle size and calculating the appropriate Fourier radius internally would be better? (playing with these numbers doesn’t seem to make much of a difference to the calculated SCF* though, so perhaps it is a non-issue)