PROCESS AND DEVICE FOR DETERMINING THE VOLUME OF LIQUID DROPLETS

First a liquid volume is comminuted into individual droplets in order to measure the volume of liquid droplets, then an electric potential different from that of the ambience is applied to the droplets, said potential determining the droplet charge as a function of its capacitance to its ambience. Finally, after charge to voltage conversion and measuring this capacitance-dependent value, the capacitance and the volume of such a drop can be determined. A liquid drop collecting vessel (2, 40) is provided for that purpose and comprises a droplet dripper (4, 42) to deliver individual droplets, further a device to charge the individual droplets formed by the drippers (4, 42). A measurement device (8, 44) is mounted underneath the liquid droplet collector vessel (2, 42) and is connected to a droplet collector electrode (16, 46) to determine the droplet capacitance by means of a voltage jump or a derivative test value. An analyzer determines the droplet volume from the measured voltage jump or from the derivative test value.