Figure 5.

(a) Raw data collected from measurements of five samples of 5.6 mg ml⁻¹ BSA (blue) and five buffers (red) showing no contamination of protein in buffer measurements. (b) Subtracted scattering data from 5.6 mg ml⁻¹ (blue) and 10.7 mg ml⁻¹ (green) BSA; multiple measurements of samples of like concentrations match within calculated errors (from Poisson counting statistics) and the difference between the two concentrations is attributed to the inter-particle effects altering with concentration.