--- type: "WebPage" title: "Surface tension analysis" description: "Your needs: measure the surface tension of your materials The surface of a material is a vulnerable zone where many interactions with its environment take place. It conditions, by its specific characteristics, the global performances of materials. It can impact..." resource: "https://filab.fr/en/our-services/our-analysis-services/laboratory-surface-characterization/surface-tension-analysis/" tags: ["EN", "pll_628214f07fe2f", "Anaïs DECAUX"] timestamp: "2025-12-31T08:44:27Z" published: "2022-06-15T14:19:34Z" language: "en" author: "bwa" --- # Surface tension analysis ## Your needs: measure the surface tension of your materials The surface of a material is a vulnerable zone where many interactions with its environment take place. It conditions, by its specific characteristics, the global performances of materials. It can impact the reliability and the solidity of a product in case of failures (corrosion, wear, adhesion, friction...). As far as surface tension is concerned, it is the molecules inside a condensed phase (liquid or solid) that are subjected to cohesive forces with their neighbors. These forces are felt only at short distances. For a molecule inside the liquid, these forces are balanced, which is not the case if the molecule is near the surface. ### Surface tension measurement in industry **Surface tension testing** is widely used across various industrial applications, as it directly affects the **performance, quality, and efficiency** of products and manufacturing processes. This analytical technique helps evaluate how materials interact with media such as water, oils, and solvents. Measurements are generally carried out using **precision tensiometers** or **goniometers**, providing **accurate and reproducible data**. Below are some examples of applications where **surface tension plays a key role** in solving industrial challenges: [Pharmaceutical industry](https://filab.fr/en/sectors-of-activity/analysis-industry-pharmaceuticals.md) [Detergents](https://filab.fr/en/our-services/our-analysis-services/chemical-analysis-laboratory/analysis-and-dosage-of-detergents-in-the-laboratory-2.md) and cleaning agents [Aerospace industry](https://filab.fr/en/sectors-of-activity/laboratory-analysis-aeronautics-aerospace.md) [Paints](https://filab.fr/en/our-services/our-analysis-services/polymer-materials-analysis-laboratory/laboratory-analysis-paint-varnish.md) and [coatings](https://filab.fr/en/our-services/our-expertise-services/laboratory-analysis-failures/laboratory-analysis-coating.md) [Microelectronics industry](https://filab.fr/en/sectors-of-activity/microelectronics-analysis-laboratory.md) ## FILAB laboratory supports you with your surface tension challenges For more than 30 years, FILAB laboratory has had the experience and[specific analytical equipment](https://filab.fr/en/our-technical-resources.md) to meet the needs of [surface analysis and characterization](https://filab.fr/en/our-services/our-analysis-services/laboratory-surface-characterization.md) on all types of materials (metallic, polymer, ceramic).  Thanks to a tailor-made support, FILAB laboratory offers you surface tension analysis such as ### Our surface tension analysis services **Surface tension** plays a decisive role in the **development and optimization of products and manufacturing processes**. FILAB offers **cutting-edge surface tension analysis** services, designed to meet the **specific challenges of each industry**. Among our surface tension testing capabilities, FILAB offers the following analytical techniques. Surface tension analysis on solutions by the hanging drop method (digidrop). Analysis of the interfacial tension of a solution. Measurement of the surface tension on a polymer. Surface tension analysis on medical devices. ### Our technical resources for surface tension measurement **Surface tension** is the force that governs how liquids interact with their environment. To measure this force, our laboratory is equipped with **sophisticated and precise analytical instruments** adapted to a wide variety of materials and formulations, such as the **goniometer**. This technique is ideal for assessing the **wettability** of surfaces and determining the **surface tension** of liquids. ## FAQ Why perform a surface tension measurement? Measuring **surface tension** in a laboratory plays a key role in the **development and optimization of industrial products and processes**, directly impacting quality, efficiency, and innovation. This type of **surface analysis** helps to understand and control the **molecular interactions at liquid interfaces**. Indeed, through surface tension testing, laboratories can better understand the **physico-chemical properties of fluids**. Surface tension has a **significant influence** on many aspects of materials, including their **moisture resistance**, **wettability**, and **adhesion**. Why is the surface of a material so important? The **surface of a material** is a vulnerable zone where numerous interactions with the environment take place. Its specific characteristics strongly influence the **overall performance** of the material and can directly affect **reliability and durability**. Surface-related issues such as **corrosion**, **wear**, **adhesion failure**, or **friction** can compromise a product’s integrity. Understanding the surface properties is therefore essential to improve performance and longevity. What does surface tension analysis of a liquid involve? **Surface tension measurement** consists in determining the **force required to break the surface of a liquid**. This property is responsible for phenomena such as **capillarity**, **droplet formation**, and **adhesion**. The **molecular attraction and repulsion forces** at the liquid’s surface are governed by surface tension. Using **advanced instruments** such as tensiometers and goniometers, FILAB can analyze the **complex interfacial behavior** of liquids with high accuracy. What are the interfacial tensions of a solution? The **interfacial tension** of a solution represents the forces acting at the **interface between two phases**. These forces arise from the **interactions between molecules** of each phase — depending on their **relative position and orientation**. Interfacial tension plays a major role in many **physico-chemical processes**, such as **bubble formation**, **particle adhesion**, and **emulsion stabilization**. By measuring interfacial tension, it becomes possible to **predict and optimize the behavior of multiphase systems** in industrial applications. What is wettability? **Wettability** is a key concept in **surface and materials science**. It describes the **ability of a liquid to spread across a solid surface**, which depends on both the **surface tension of the liquid** and the **surface energy and geometry of the solid**. Wettability can range from **non-wetting behavior** (where the liquid forms beads) to **complete wetting**, where the liquid spreads fully across the surface. This property is essential in many applications, such as: - **Medical implants and biomaterials**, **** - **Hydrophobic coatings and protective films**, - **Synthetic textiles**, **** - **Energy and surface engineering technologies**.