Fig. 1. Nonreactive pulse (0.1 M CaCl2 applied to a background of 0.01 M CaCl2) to investigate the mixing conditions in a flow-through desorption cell with the presence of 0.075 g kaolinite. The flow rates used were 1 mL min–1 (low), 2.7 mL min–1 (medium), and 4 mL min–1 (high). Changes in electric conductivity over time were presented relative to the electric conductivity of the applied pulse (EC/EC0). Data represent the means of two replicates.