Optical contact angle measuring- OCA 25

OCA 25 – Reliable Optical Contact Angle Measuring Instrument for Everyday Surface Science

The OCA 25 from DataPhysics Instruments is a precise and adaptable optical contact angle measuring instrument developed for laboratories and industrial users seeking efficient drop shape analysis and surface energy evaluation. Balancing high-performance optics with ease of use, the OCA 25 is perfect for routine measurements as well as more demanding surface analysis tasks.

This model features a manual sample table with fine adjustment in the X, Y, and Z axes, allowing users to position samples accurately for repeatable measurements. It’s equipped with a high-resolution USB 3.0 camera capable of capturing up to 4276 frames per second, making it well-suited for analyzing dynamic and static contact angles with clarity and speed.

A 6.5x zoom lens, continuous fine focus, and variable observation angle provide sharp image quality across different sample types. The LED lighting system—controlled manually or via software—ensures stable illumination with temperature drift compensation for consistent imaging.

The OCA 25 supports both manual and electronic dosing systems, including nanolitre dispensers for microstructured surfaces. This flexibility allows users to adapt the system to their specific research or quality control needs.

Typical applications include measuring contact angles, determining surface and interfacial tension, and evaluating adhesion and wettability. The modular design allows upgrades with environmental chambers, wafer holders, and tilting units, making the OCA 25 a scalable solution for growing laboratories.

The Optical contact angle measuring-OCA 25 is the all-purpose measuring device for contact angle measurements and drop shape analysis. The sample table of the OCA 25 is adjustable along all three directions in space via precision axes with hand wheels. Hence, a fast and exact manual positioning of the sample is always guaranteed, even when using high-performance temperature chambers like the electrical temperature control unit TEC 700U. Analysis of even the fastest processes is possible recording up to 4276 frames/s using the 6.5-fold zoom lens and the high-performance camera with USB 3 interface. Hence, contact angles on adsorbing surfaces like tissues or powders can be measured reliably. For dosing liquids the manual single and double direct dosing systems SD-DM and DD-DM can be used as well as the electronic multiple direct dosing system DDE/x. The latter are able to electronically position one to four electronic syringe modules ESr-N.

Furthermore, a nanolitre dosing system can be used to generate extra small liquid drops. Even these are no challenge for the OCA 25 due to its high resolution optics.

• sample table adjustable in all three axis with precision mechanics
• high performance 6.5-fold zoom lens
• integrated continuous fine focus, and adjustable observation angle
• video measuring system with high-performance camera using USB 3 interface
• LED-lighting with manual and software controlled intensity including automatic temperature drift compensation