Surface tension refers to the phenomenon of liquid surface shrinkage caused by the interaction forces between liquid molecules. It plays an important role in many industries, such as coatings, inks, textiles, medical devices, etc.

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A contact angle tester is an instrument used to measure the contact angle of liquids on solid surfaces, which can be used to measure data such as surface tension of liquids and energy levels on solid surfaces. The following are some industries that require the use of contact angle testers:

1. Cosmetics industry: In the cosmetics industry, contact angle testers can be used to evaluate the performance of products such as shampoo, conditioner, and cosmetics. They can be used to test the surface tension, wettability, and adhesion of products, which is of great significance for product quality and formula optimization.

2. Medicine and Biomedical: In the field of medicine and biomedical sciences, contact angle testers can be used to study the interactions between drugs, medical devices, and human tissues. They can be used to evaluate the wettability and release properties of drugs, as well as the surface properties and biocompatibility of medical devices. They are of great significance for drug development and medical device design.

3. Agriculture and Food Industry: In the agriculture and food industry, contact angle testers can be used to study the surface tension and wettability of pesticides and food additives. They can be used to evaluate the spraying effect of pesticides and packaging materials for food, and are of great significance for the production and processing of agriculture and food.

4. Industries such as spraying, coating, glass, aluminum foil, electronic components, and cleaning: In these industries, contact angle testers can be used for surface treatment effect analysis and cleanliness detection, and can be used to detect surface tension, wettability, and other properties of coatings.

5. Petroleum and Chemical Industry: In the petroleum and chemical industry, contact angle testers can be used to analyze the interfacial tension between oil and water, the hydrophilicity and hydrophobicity of oil and water on the surface of rock cores, and can be used to evaluate the development potential of oil reservoirs and the transportation performance of oil products.

6. Ink and Paper Industry: In the ink and paper industry, contact angle testers can be used to measure the wettability and adhesion of ink and paper, and can be used to evaluate the printing suitability of ink and the quality of paper.

The contact angle tester, as a tool for measuring surface tension, has a wide range of applicability and importance. It plays a crucial role in many industries, helping businesses improve product quality and performance.