High-precision optical goniometer for static and dynamic contact angle measurement, surface energy calculation, and wettability analysis of solid surfaces.
The DataPhysics OCA Contact Angle Measuring System is the global reference instrument for wettability characterization. It measures static and dynamic contact angles with optical precision, calculates surface free energy from multi-liquid measurements, and supports a comprehensive range of dosing and tilting experiments.
The DataPhysics OCA is the world's leading contact angle measuring system, trusted by thousands of research institutions and industrial laboratories worldwide. It uses optical goniometry to capture and analyze the profile of a liquid droplet placed on a solid surface, extracting the contact angle at the three-phase contact line with high precision.
Beyond static contact angle measurement, the OCA supports a comprehensive range of experimental protocols: advancing and receding angles for contact angle hysteresis, roll-off angle via tilting stage, dynamic contact angles during droplet spreading, and surface free energy calculation using the OWRK, Wu, or acid-base models from multi-liquid measurements.
The SCA20 software provides a complete measurement environment — from automated dosing and image acquisition through drop shape analysis and statistical reporting — enabling reproducible, operator-independent results for both research and quality control applications.
| Measurement Method | Sessile drop, pendant drop, captive bubble, Wilhelmy plate |
| Contact Angle Range | 0° – 180° |
| Accuracy | ± 0.1° |
| Camera | CCD/CMOS, up to 2048×1536 pixels |
| Frame Rate | Up to 800 fps (high-speed option) |
| Dosing System | Motorized syringe, 0.01 µL resolution |
| Drop Volume Range | 0.1 µL – 250 µL |
| Tilting Stage | 0° – 90° motorized (optional) |
| Temperature Control | -10°C to +350°C (optional stage) |
| Software | SCA20 (Windows), full automation |
| Light Source | LED, fiber optic |
| Stage | XY motorized, manual Z |
Our scientific instrument specialists are ready to help you find the best solution for your research needs.
