Fig. 5. Three laboratory parameters are chosen: tubing length and radius plus flow rate. The former two are the axes and the flow rates of each plot are indicated. Contours of the remaining three parameters comprise each plot. Coloured lines are σt (Note colour key at right. Individual contour lines correspond to the numerical values on the colour bar, e.g., the gold line fifth from the bottom is the 120-minute line.), red dashed lines are collection time (minutes) and grey lines are pressures (kPa). Note further the annotations in the left plot. Other parameters: diffusion coefficient of analytes: 6.0 × 10–10 m2 s–1; viscosity: 0.00089 Pa s.
