Figure . Variation of permeation time, 𝑡, with nopinone feed concentration 𝑐 K(B),.@? , for each permeate batch 𝑘. The red circle highlights an outlier in the Run 1 dataset. The blue line is a 6 th degree polynomial line of best fit to the Run 1 data points (excl. the outlier). The raw experimental data was used to calculate the mean permeation time and the mean nopinone concentration of each permeate batch 𝑘, 𝑡 ̅ N and 𝑐̅ ?,.@?,N , at the respective log mean nopinone feed concentration of each batch, 𝑐̅ K(B),.@?,N . To avoid erroneous bias when calculating the arithmetic mean, the identified outlier in Run 1 was removed from each dataset, and replaced with values estimated from a polynomial line of best fit through the remaining data points of Run 1. The resulting variation of 𝑡 ̅ and 𝑐̅ ?,.@? with 𝑐̅ K(B),.@? is plotted in Figures and. These values were used to estimate the performance characteristics of the BW30 RO membrane for the separation of nopinone from mixed methanol-water solvent (Section 4.2).