Time resolved small angle X-ray scattering (TR-SAXS) experiments were performed at the ID02 beamline , also at ESRF. In this case a stopped-flow apparatus was used to rapidly and repeatably mix the vesicles (with and without peptide) and the salt solutions using a turbulent flow mixing chamber. The mixed sample then flows into the measurement thin-walled quartz capillary (1.3 mm in diameter) where it is stopped by a solenoid valve (hard stop) in the downstream. The time it takes from mixing the solutions until the mixture reaches the point of X-ray exposure determines the dead time, t dead , and is the earliest possible kinetic time that can be probed. After the initial mixing phase, the hard stop ceases the flow and repeated SAXS frames are rapidly captured to follow the time evolution of the sample. Crucially, the stopped-flow apparatus allows for the precise synchronization of the mixing of the sample and acquisition of the SAXS spectra.