After withdrawing the dipping electrode array from the plate you can wipe off residual liquid with a tissue. Alternatively, you can wash used electrodes with ethanol which won't damage the electrodes. To avoid cross-contamination of non-used electrodes, we would suggest to fill the corresponding well positions of a 24-well plate with 350-400 µl 80% EtOH, insert the dipping electrode array for about 2 min and then store the array in a fresh 24-well culture plate or the blister package for later use of the unused electrodes.