For calibration measurements, standard solutions were used instead of a sample solution. For standard addition procedure, the sample and a standard solution (10–40 μL) were aspirated sequentially into the HC and then they were directed into the MC for a faster homogenization. The resulting mixture solution was then propelled toward the FC to be deposited. To study the accuracy of the proposed method and to check the interferences from excipients of the dosage forms, recovery experiments were carried out. All currents were corrected for the current measured for the blank solution.