Examples of manual optical contact angle measuring instruments

　　1. Physical chemistry experimental teaching;

　　2. Surfactant, soap and detergent adsorption analysis;

　　3. Analysis of emulsion interface changes;

　　4. Analysis of surface free energy and contact angle of polymers and medicines;

　　5. Sprays, paints and coatings;

　　6. Surface tension test of paper, film and ink products;

　　7. Cosmetics;

　　8. Aluminum foil hydrophilic angle test;

　　9. Analysis of hydrophilicity and hydrophobicity of fabric surface;

　　10. Food industry;

　　11. Analysis of surface treatment effect;

　　12. Analysis of cleaning effect;

　　13. Stability of emulsions and foams;

　　14. Adsorption and competition of surfactants, proteins or polymers at interfaces;

　　15. Characterization of interfacial rheological properties;

　　16. Surface cleanliness analysis;

　　17. LCD, LED, PCB, chip (wafer) water drop angle and surface cleanliness test.