Hi!
I am new to SAXS and have some questions about data processing:
I collected SAXS-data for three to four different protein concentrations. I observed, that I get better Chi-values in CRYSOL, when I do not merge the scattering curves of different concentrations.

1. Do I have to merge different concentration curves for CRYSOL and ab initio model building?
2. What is the minimum of data-sets that can be used?
3. Is there any rule how to cut data in order to remove the noisy part? (error?) or for the merging different concentrations?

Thank you

I didn't find the right solution from the internet.