Portable Contact Angle Meter

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 assessing surface properties.

The fully automatic portable contact angle meter employs optical imaging principles to measure sample surface properties such as contact angle, wetting performance, and surface energy through image contour analysis. The handheld contact angle meter is a specialized device suitable for outdoor and large-scale sample surface testing. It features a compact size, portability, high cost-effectiveness, high measurement accuracy, and precise low-angle testing.

Portable contact angle meters are widely 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 an essential 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 via 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 wetting 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. Measurement of surface tension and its polar and dispersive components for various liquids using the hanging drop method;
6. Calculation of solid surface free energy and analysis of its polar and dispersive components;
7. Analysis of liquid adhesion work on solid surfaces to evaluate surface uniformity and cleanliness;

The portable contact angle meter primarily consists of four major components: light source, dispensing unit, acquisition system, and analysis software. The device operates based on optical imaging principles.
① Light source employs a dense LED cold light design, ensuring uniform illumination, clear images, and extended lifespan;
② Dispensing unit utilizes a manual knob for precise droplet control, delivering stable and accurate dispensing;
③ The acquisition system employs a miniature industrial-grade microscope and a Japanese-imported CCD camera, ensuring stable capture, clear images, and reliable results. The lens utilizes German industrial-grade imported components, delivering distortion-free imaging;
④ The analysis software is highly functional, featuring one-click fully automatic fitting capabilities and internationally advanced fitting methods to achieve precise fitting for various droplet morphologies;

• The main unit 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.

• As the sole manufacturer addressing low-angle fitting issues in handheld contact angle measurement instruments, this compact, portable device is the premier choice for testing surface wetting properties of routine samples in outdoor environments.

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

• Utilizes a high-performance, Japanese-imported industrial motor and a miniature industrial-grade microscope, achieving virtually distortion-free images for optimal imaging results.

• Employs a USB standard interface for fast data transfer, high compatibility, and strong imaging stability.

• As China's first provider of German-imported contact angle calibration samples, we guarantee instrument precision. Angle calibration standards include 15°, 30°, 60°, 90°, and 120° (optional).

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

• Features globally advanced contact angle analysis methods for precise fitting of all droplet imaging types, including proprietary differential ellipse and differential circle methods for specialized liquid imaging.

• Dynamic imaging and video rapid testing capture continuous contact angle changes, automatically batch-fitted by the software.

• Features rapid bilateral contact angle measurement fitting for comprehensive analysis of liquid-solid surface wetting properties and accurate assessment of actual surface wetting conditions.

• Employing internationally advanced computational methods, the software achieves fully automated fitting to eliminate human-induced measurement errors.

• Software automatically generates reports in multiple formats, including Word, Excel, and graphical spectrum formats.

• With a wide range of optional accessories available, our robust R&D team can meet the vast majority of measurement requirements proposed by customers.