In addition to regular viscosity measurements (as described in Section 1.4.) additional viscosity measurements were performed using a CP50 geometry and 0.101 mm gap at 25 °C. Two identical viscosity measurements were performed immediately one after the other on a single solution with the geometry remaining in the measuring position between the first and second viscosity measurements. Samples were left to sit under the CP50 geometry for about two minutes undisturbed between measurements.