ZetaSpin is a device that uses a rotating disk to measure the zeta potential of a disk-shaped sample. The design allows it to be flexible and customizable. We can experiment with different types of rocks and adjust the system to our needs with certain limits.
Rame-Hart contact angle goniometer measures dynamic or static contact angle in ambient or controlled environment. In addition to it the measurement of surface tension is also available. The flexibility of the device allows measuring contact angles in different modes or settings, which eases the procedure for unique samples, like a piece of rock.
Quartz Crystal Microbalance measures a mass variation per unit area by measuring the change in frequency of quartz crystal resonator. QCM can be used under vacuum, in gas phase and more recently in liquid environment.