Fully Automatic Contact Angle Goniometer

Product Technical Specifications:

1 Product Model: ST3900

2 Used to test the anti-wetting performance of fabrics and membrane materials, suitable for various testing standards, such as the latest national standard: GB/T42694-2023

3 Can measure solid surface energy: two-liquid method, other calculation methods can be added as needed

4 Can measure liquid surface tension using the pendant drop method

5 Can calculate fixed surface energy and liquid surface tension through software

6 Suitable for samples of different volumes

7 Sample stage size: 120mm*120mm

8 Sample stage travel range: X-axis ±40mm, accuracy 0.1mm; Y-axis ±40mm, accuracy 0.1mm; Z-axis 45mm, accuracy 0.1mm

9 Contact angle measurement range: 0-180°

10 Contact angle display accuracy: ±0.01°

11 Contact angle measurement accuracy: ±0.1

12 0.01-2000mN/m (design range), resolution ±0.01mN/m

13 Optical system: 0.7X-4.5X high-definition variable magnification lens with a wide field of view, suitable for observing droplets of different volumes

14 Optical lens vertical adjustment: ±3°

15 Optical lens travel: XY axis: ±6.5mm

16 Light source system: 40x40mm adjustable monochromatic LED cold light source. Optional light shield available, adjustable light source height, and light intensity adjustable via knob.

17 Video system pixels: 1.3 million

*18 Video system: USB3.0 CCD, capable of capturing up to 200 frames per second and recording video

*19 Injection method: Fully automatic injection method with automatic control of injection volume

20 Droplet injection control precision: 0.01μl-5μl (precisely controlled by software, automatic droplet touching), injection speed can be adjusted according to the syringe range, and a precision stepper motor is used to control the titration speed

21 equipped with50 and 100microliter injectoreach1piece

22 Equipped with a fully automatic up-and-down motion system, ensuring the injector automatically moves away from the sample stage after injection, and ensuring that only the droplet is displayed on the software interface

23 Equipped with a manual lifting stage to ensure the accurate positioning of the initial position of the injector for samples of different thicknesses.

*24 Equipped with an independently developed electric rotary stage, the dimensions of the rotary stage surface are: 34mm*30mm,

*25 Electric rotating stage: achieves fully automatic control of the rotating stage (left rotation, right rotation, automatic reset, automatic recording of rotation angle, etc.), automatic reset, simultaneous photography and automatic testing of the rolling angle.

26 Measurement software: STS2000, with a simple operating interface suitable for various users, capable of automatically measuring the rolling angle, advancing angle, receding angle, etc.

27 The software can measure static and dynamic contact angles. The photography and testing functions are separated, which better aligns with the operator's workflow. Meanwhile, it offers a wider range of sample compatibility; for example, it will not misjudge samples with surface fuzz during measurement.

28 It can take photos while injecting samples, and high-speed photography enables real-time recording and saving of the liquid change process.

*29 Measurement methods: protractor method, altimeter method, circle fitting, ellipse fitting (can fit the elliptical contour),Young-Laplace法等，Automatic recognition method (suitable for test environments with good background conditions),Ellipse fitting is closer to the actual state of the droplet (due to the influence of gravity, droplets are elliptical in shape),

30Capable of surface free energy calculation and pendant drop method tension testing.

31 Optional heating stage available

1）Temperature range: Room temperature-400℃

2）Temperature control resolution:0.1℃

*32Instrument dimensions:473mm*160mm*520mm (L×W×H), compact size, small footprint, high integration, and no additional control box required

33Instrument weight:18Kg

34Power supply:220V 50Hz