“…The popularity of using small-angle X-ray scattering on proteins and nucleic acids in solution (bioSAXS) to resolve their three-dimensional shape is continuously growing (Graewert & Svergun, 2013;Hura et al, 2009;Reyes et al, 2014). This has not only resulted in the construction of new dedicated synchrotron beamlines, such as BM29 at the ESRF, P12 at the EMBL Hamburg and B21 at the Diamond Light Source (Pernot et al, 2013;Blanchet et al, 2015;Materlik et al, 2015), but also pushed forward new developments in both beamline instrumentation and sample handling. Examples for this trend are the development of dedicated sample changers (Round et al, 2008(Round et al, , 2015Hura et al, 2009;Nielsen et al, 2012;Martel et al, 2012) and the integration of size-exclusion chromatography systems into existing beamlines to ensure the monodispersity of the sample at a given time (Mathew et al, 2004;David & PĂ© rez, 2009;Round et al, 2013;Graewert et al, 2015).…”