The Q-Sense E4 quartz crystal microbalance is equipped with the E4 measuring chamber that allows simultaneously running a maximum of four experiments in the four temperature controlled cells. Changes in frequency and dissipation are registered by means of the E-series electronic unit which is also responsible for the temperature control. These changes are related to the adsorbed wet mass and the viscoelastic properties of the films adsorbed onto the sensor. The QCM-D is also equipped with an electrochemistry and an ellipsometry module enabling the simultaneous measurement of the electrochemical and optical properties respectively of the adsorbed films. A four channels IPC peristaltic pump (Ismatec). Data analysis is performed with the Q-Tools software (Q-Sense).