Figures S4 and S5 show the permeation time, 𝑡, and permeate concentration, 𝑐 ?,.@? , observed for each collected permeate batch 𝑘 across all three experimental runs, respectively, where 𝑐 ?,.@? was inferred from the GC-MS signals given in Table and Eq. 1 in the main text. The results are plotted against 𝑐 K(B),.@? , the log mean nopinone concentration of the feed bulk throughout each sampling interval 𝑘 (inferred from Eq. 2 -5, main text). Errors in 𝑐 ?,.@? shown in Figure represent prediction errors arising from the uncertainty associated with converting GC-MS signals to nopinone concentrations (Eq. S3). Errors in 𝑐 K(B),.@? caused by the propagation of uncertainties in 𝑐 ?,.@? were determined using Eq. S6. However, the resulting errors were of order 10 )L or lower, such that the error bars in 𝑐 K(B),.@? were too small to be visualized in Figures and.