Water Drop Contact Angle Measuring Instrument

The contact angle refers to the angle θ formed between the tangent line to the gas-liquid interface at the triple point of gas, liquid, and solid, and the solid-liquid boundary line on the liquid side. Contact angle measurement is currently the primary method for testing surface properties.

The JC1 Standard Contact Angle Meter employs optical imaging principles to measure surface properties such as contact angle, wetting performance, interfacial tension, and surface energy through image contour analysis. Offering high cost-effectiveness and comprehensive functionality, it meets diverse routine measurement needs and is widely adopted across universities, research institutions, and enterprises.

Contact angle measurement instruments are extensively applied across diverse industries. In sectors such as mobile phone manufacturing, glass production, surface treatment, materials research, chemical engineering, semiconductor fabrication, coatings and inks, electronic circuits, textile fibers, and medical biotechnology, contact angle measurement has become a crucial instrument for evaluating surface properties. (Certain testing functions require optional accessories.)
1. Wetting behavior of liquids on solid surfaces, including spreading, penetration, and absorption. Static contact angle measurement using the sessile drop method.
2. Measurement of advancing angle, receding angle, contact angle hysteresis, rolling angle, and dynamic contact angle on solid surfaces.
3. Continuous real-time analysis and process recording of absorption materials, including time-dependent contact angle curve analysis.
4. Contact angle measurement for various specialty materials such as powders, curved surfaces, and superhydrophobic/superhydrophilic samples.
5. Contact angle testing of materials immersed in liquids using the attached drop method.
6. Measurement of surface tension and its polar and dispersive components for various liquids using the hanging drop method.
7. Calculation of solid surface free energy and analysis of its polar and dispersive components.
8. Analysis of liquid adhesion work on solid surfaces to evaluate surface uniformity, cleanliness, etc.

The contact angle measuring instrument primarily consists of five major components: light source, injection unit, sample stage, acquisition system, and analysis software. The device operates based on optical imaging principles.
① Light source employs a dense LED cold light design for uniform illumination, clear imaging, and extended lifespan;
② The dispensing unit employs a micro-volume manual knob-operated liquid feed system, ensuring stable droplet formation and high precision;
③ The sample stage utilizes a three-dimensional manual fine-adjustment platform, offering flexible operation and accurate positioning. The stage can be customized to accommodate actual sample dimensions;
④ The imaging system incorporates an imported monochrome CCD camera, delivering stable capture, clear images, and reliable results. The lens features German industrial-grade imported components with 0.6-5x adjustable magnification, ensuring distortion-free imaging;
⑤ The analysis software is highly functional, featuring one-click fully automated fitting capabilities and employing internationally advanced fitting methods to achieve precise fitting for various droplet morphologies.

• The host features a high-strength aerospace aluminum alloy structure combined with a modular design concept. It employs independently developed integrated chip circuit control and incorporates the design essence and configuration of internationally superior imported contact angle equipment, ensuring exceptional instrument stability.

• It utilizes the world's most advanced contact angle analysis methods, enabling precise fitting for all types of droplet imaging, including proprietary differential ellipse and differential circle methods for special liquid imaging.

• An industrial-grade, densely adjustable LED cold light source system (lifespan exceeding 25,000 hours) ensures clearer imaging while preventing small droplet evaporation caused by excess heat.

• As the first domestic provider of German-imported contact angle measurement calibration samples, we guarantee instrument precision. Angle calibration standards include 3°, 5°, 8°; 60°, 90°, 120°; and 115° (optional).

• Features a high-performance, Japanese-made industrial-grade motorized stage and continuous zoom microscope to ensure image authenticity and achieve optimal imaging results.

• Equipped with rapid bilateral contact angle measurement fitting capabilities for comprehensive analysis of liquid-solid surface wetting properties and precise assessment of actual surface wetting conditions.

• Features a USB 2.0 standard interface for fast data transfer, high compatibility, and stable imaging.

• Utilizes internationally advanced computational methods; the software achieves fully automatic fitting to eliminate human-induced measurement errors.

• The flexible acquisition system design accommodates most measurement environments and easily handles complex sample surface measurements.

• Dynamic capture and video-based rapid testing enable continuous recording of contact angle changes, followed by automated batch fitting by the software.

• The software automatically generates reports in multiple formats, including Word, Excel, and graphical spectrums.

• With a wide range of optional accessories, our robust R&D team can fulfill diverse custom measurement requirements proposed by clients.