DATAPHYSICS INSTRUMENTS GMBH - Your Partner in Understanding Interfaces

The optical contact angle meters of the OCA series are high-precision measuring systems for the characterisation of interfaces and surfaces. They combine high-resolution optics, pinpoint liquid dosing and precise sample positioning to create powerful, reliable measuring systems. The entry-level model OCA 15EC enables basic methods of professional contact angle measurement and drop shape analysis. Thanks to the modular construction, even this entry-level model can be combined with many accessories, such as the TBU 100EC tilting unit. Possible Measurements: - static contact angle - dynamic contact angle - interfacial/surface tension - surface energy - viscoelastic modulus - work of adhesion

The optical contact angle meters of the OCA series are high-precision measuring systems for the characterisation of interfaces and surfaces. They combine high-resolution optics, pinpoint liquid dosing and precise sample positioning to create powerful, reliable measuring systems. The OCA 25 standard model is the all-purpose system for contact angle measurements and drop shape analysis. The high-performance camera makes it possible to measure contact angles even on adsorbent surfaces such as tissues or powders. Compared to the entry-level OCA 15, additional measurements at temperatures of up to 700 °C are possible. Further advantages are the more precise positioning of the sample table as well as the compatibility with many more dosing systems, which allow electronic dosing and droplet volumes down to a minimum of ten nanolitres. Measurements: - static contact angle - dynamic contact angle - interfacial/surface tension - surface energy - viscoelastic modulus - work of adhesion

The optical contact angle meters of the OCA series are high-precision measuring systems for the characterisation of interfaces and surfaces. They combine high-resolution optics, pinpoint liquid dosing and precise sample positioning to create powerful, reliable measuring systems. The special model OCA 25-HTV is based on the OCA 25 standard model. It is suitable for measuring contact angles at high temperatures of up to 1800 °C and in a vacuum of up to 0.00001 mbar or in an inert gas atmosphere. With an optional dosing system, the OCA 25-HTV can also be used at room temperature for all standard analyses such as the determination of surface energy and the measurement of interfacial tensions.

The optical contact angle meters of the OCA series are high-precision measuring systems for the characterisation of interfaces and surfaces. They combine high-resolution optics, pinpoint liquid dosing and precise sample positioning to create powerful, reliable measuring systems. The special model OCA 25-PMC is based on the OCA 25 standard model. With its high-pressure measuring chamber, the special model OCA 25-PMC offers the possibility of carrying out measurements of interfacial tensions and contact angles under high-pressure of up to 750 bar and at temperatures between -30 °C and 200 °C. This makes the OCA 25-PMC the ideal solution to investigate, for example, the interfacial tension between a surfactant solution and crude oil in reservoir conditions. It is also possible to determine the contact angle, for example, between rock, oil, and surfactant solution.