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    Surface tension

    > 3 min

    How to calculate the surface tension components of a liquid?

    The method to calculate the surface tension component is defined in ISO 19403-5:2017 standard.

    ~ 3 min

    What is a wetting agent and where are they used?

    A wetting agent is a surface-active molecule used to reduce the surface tension of water.

    < 6 min

    Pendant drop method for surface tension measurements

    Surface tension can be measured with force tensiometer using Du Noüy ring or Wilhelmy plate. Or with optical tensiometer using the pendant drop method.

    < 4 min

    Surface tension measurement by Du Noüy ring method

    Du Noüy method utilizes the interaction of a platinum ring with the surface of the liquid.

    > 3 min

    Surface tension of water – Why is it so high?

    The surface tension of water is about 72 mN/m at room temperature which is one of the highest surface tension for liquid.

    ~ 2 min

    Surface tension of artificial blood for medical face mask evaluation

    Surface tension of blood is an important characteristic when protective materials are being evaluated.

    ~ 2 min

    Optimize the level of additives in coating formulation with surface tension measurements

    A basic requirement of any coating is that it should form a uniform, defect-free surface. Surface and interfacial tensions play a key role in that.

    > 2 min

    What is surface tension?

    The net force, which effectively aims to keep the liquid together, is called surface tension.

    < 3 min

    How to characterize surfactant solutions?

    Surfactants are used in many industrial fields. Characterization of surfactants is thus important to optimize their performance and the products they are applied to. Surface and interfacial tension measurements offer versatile method to study the properties and behavior of the surfactant solution.

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