Summary：
Basic static contact angle meter with manual dosing, automatic contact angle testing. Supporting software is included.

Technical Features:

1. The whole mechanical frame adopts all-metal aluminum alloy structure, sturdy and durable. Modular component design facilitates disassembly and assembly to meet different precision test requirements.
2. Threaded adjustable square platform. Suitable for uneven samples, the platform can be adjusted freely to guarantee the level of the droplet stage.
3. Unique camera bracket with wide adjustable telescopic range. Teflon camera protective ring prevents scratch during movement. Hex screw locking structure fixes the camera firmly to avoid shaking.
4. Precision ball screw and guide rail structure enables fast and accurate movement of the droplet stage in horizontal directions. Manual movement precision error: 0.01 mm. The front-back travel range reaches up to 80 mm, allowing users to adjust the camera and sample stage to the optimal position.
5. Adjustable horizontal sample stage for easy leveling.
6. Manual differential head micro-syringe titration, accuracy: 0.1 μL. Clear scale for easy operation. Needle locking structure is equipped. Optional needles made of stainless steel or PTFE are available to adapt to different test samples.
7. The vertical travel range of the droplet sampler is up to 60 mm.
8. Backlight: LED cold light source with continuously adjustable brightness, presenting clear droplet outline. Zero heat generation to avoid droplet evaporation during long-time testing.
9. High-performance industrial digital camera with high resolution, high definition, excellent color reproduction and low noise. USB2.0 interface for plug-and-play. The lens is an industrial continuous zoom lens with 0.7–4.5× optical magnification. Standard camera resolution: 2048 × 1536, frame rate: 25 fps. Optional 3MP / 5MP high-resolution cameras, frame rate up to 100–300 fps.
10. Standard calibration samples and calibration function are available.
11. Built-in video recording function.
12. Solid surface free energy can be measured by the one-liquid method and two-liquid method.

Technical Parameters：

1. Resolution: 0.01°
2. Measurement precision: 0.1°
3. Measurement range: 0°–180°
4. Sample stage parameters
a) X-axis manual travel range: 100 mm
b) Y-axis manual travel range: 80 mm
c) Z-axis vertical travel: 10 mm, resolution: 0.01 mm
d) Sample stage size: 80 mm × 80 mm
5. Injection control parameters
a) Droplet titration by manual differential head and microinjector
b) Micro-syringe: 100 μL, accuracy: 0.1 μL
c) Needle locking structure equipped
d) Injector Z-axis manual stroke: 60 mm, precision: 0.01 mm
6. Level adjustment
a) Adjustable foot pads for platform leveling
b) Fine leveling adjustment: 10 mm range, 0.1 mm precision
7. Light source: Brightness-adjustable monochromatic LED cold light source
8. Lens: Industrial continuous zoom lens, 0.7–4.5×
9. Camera
a) Standard industrial color USB2.0 camera; 1394 interface camera optional
b) Output format: Distortion-free BMP image / AVI video
c) Standard max resolution: 2048 × 1536; 5MP or higher resolution optional
d) Frame rate: 15–40 fps; 100 / 200 / 300 / 1000 fps customizable
e) Built-in video recording function
10. Solid surface free energy test
a) Calculation method: One-liquid method & Owens two-liquid method
b) Measurement range: 0.01 mN/m – 2000 mN/m
c) Measurement precision: 0.01 mN/m
11. Surface tension test
a) Measurement principle: Pendant drop method. Real droplet profile analysis, automatic sampling and automatic calculation of surface tension and geometric parameters
b) Measurement range: 0.01 mN/m – 2000 mN/m
c) Measurement precision: 0.01 mN/m
12. Software: Copyrighted contact angle analysis software, powerful automatic analysis to minimize human error
a) Supports static contact angle and dynamic contact angle tests (advancing angle, receding angle, tilt angle, sliding angle)
b) Automatically identifies gas-solid-liquid three-phase interface and solid-liquid interface
c) Multiple fitting algorithms: Height method, single-circle fitting, double-circle fitting, real contour fitting. Automatically calculate contact angle and average bilateral angle without manual operation
d) Calculation models for flat, rough flat, concave and convex samples
e) Multiple test collection modes: single test, continuous timed/continuous frame capture, custom combined modes
f) Integrated database management for classified data storage. Export images and data to Excel, PDF, XPS, or directly print
g) Image processing functions: binarization, contour extraction, etc.
h) Full-range high-precision contact angle calibration function to improve equipment accuracy
i) Measurement mode: automatic measurement with manual correction. One-click test: auto capture → identify three-phase points → calculate left & right contact angles → display results, fully automatic to reduce human interference
13. Multi-dimensional motion adjustment structure integrated into the instrument.