Contact Angle is the tangent line of the gas-liquid interface at the intersection point of gas, liquid and solid. This tangent line has an Angle between the liquid and the solid-liquid boundary. The measurement of contact Angle is the main method for surface performance detection nowadays.

SDC-80 basic contact Angle measuring instrument adopts the principle of optical imaging to measure the surface contact Angle, wettability, surface energy and other properties of the sample by means of image profile analysis. The equipment has high cost performance, comprehensive functions and can meet the requirements of conventional sample surface wettability measurement.


Contact Angle measuring instrument is widely used in various industries, in the mobile phone manufacturing, glass manufacturing, surface treatment, material research, chemical and chemical industry, semiconductor manufacturing, paint and ink, electronic circuits, textile fiber, medical biological and other fields, contact Angle measurement has become an important instrument to evaluate the surface performance.

  1. Wetting behaviors of liquid on solid surface, such as spreading, infiltration and absorption, etc., static contact Angle was measured by droplet method;
  2. Measurement of forward Angle, backward Angle, contact Angle lag, rolling Angle and dynamic contact Angle of materials on solid surface;
  3. Continuous real-time research and process recording of absorption materials, and curve analysis of contact Angle changes with time;
  4. Measurement of contact Angle of various special materials, such as powder, curved surface, superhydrophobic/superhydrophilic samples;
  5. Test the contact Angle of the material immersed in the liquid by adhesive drop method;
  6. Measurement of interfacial tension, polarity and dispersion components of various liquid surface by droplet method;
  7. Calculate the Surface free energy and analyze its polar dispersion component;
  8. Analyze the adherent work of liquid on solid surface to evaluate the uniformity and cleanliness of solid surface.Specifications
    Contact Angle main engine
    Outside size550mm(L)*360mm(W)*470mm(H)
    Power220V /50/ 60HZ
    light source system
    Ligh sourceDense LED can adjust white tone industrial grade cold light source
    lifetimeThe service life is more than 25,000 hours
    injection unit
    injection syringeDedicated precision syringe capacity 1000μL
    dropping liquidManual rotary injection, drip precision can be achieved 0.2μL
    Injection unit movementUp down 100mm;  left right 100mm
    Acquisition system
    CCDSONY Imported high speed industrial chip, 25 frames /S, 130W pixels
    Lens0.7-4.5X High definition industrial class continuous variable magnification microscope
    Acquisition system adjustmentAround 30 mm, view Angle adjustable (smooth inspect, look down, look up, rotate 360 ° Angle of view, etc)
    Sample station installation
    Table size120mm*150mm
    Maximum sample size6inch

    Sample table movement

    Before-after move  manual,stroke 60mm,accuracy 0.1mm

    Left-right move   manual,stroke 35mm,accuracy 0.1mm

    UP Down move      manual,stroke 80mm,accuracy 0.1mm

    Analysis software
    Contact Angle measurement range0-180°
    Accuracy of contact Angle measurement±0.1°
    Analyze software functions1、Automatic fitting method of the most advanced contact Angle measurement and analysis software in China (one-key automatic fitting,

    There is no manual error) including

    :Circle method、Ellipse/Oblique ellipse LY、Differential circle / Differential ellipse;

    2、Dynamic contact Angle fitting (batch fitting of multiple images) includes:(Wettability)、(Video analysis);

    3、 Surface energy calculation;

    4、 Adhesion funciton;


    Accord with national standard

    1.GB/T 24368-2009(Detection of hydrophobic contaminants on glass surface);

    2.SY/T5153-2007(Method for determination of wettability of reservoir rocks);

    3.ASTM D 724-99(2003)(Test method for wettability of paper surfaces);

    4.ASTM D5946-2004(Measurement of the contact Angle between plastic film and water);

    5.ISO15989(Measurement of water contact Angle of plastic film and thin plate corona treated film);

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