A tensiometer is an instrument used to measure the surface tension of liquids, which is widely used in chemistry, physics, materials science and other fields. Depending on the measuring principle and application scenario, tensiometers can be divided into several types. The following are several common tensiometers and their characteristics.
1.Annular Balance Tensiometer, Annular Equilibrium Tensiometer is a common laboratory surface tension measuring instrument. It calculates the surface tension by placing a filament or ring on the surface of the liquid, measuring the required tensile force. This tensiometer is suitable for samples with large liquid surface tension, such as solutions, liquid metals, etc.
2.Static drop surface tensiometer, Static drop surface tensiometer is an instrument that uses the principle of free fall of liquid droplets in a capillary to measure surface tension. It calculates the surface tension by measuring the rate of descent or morphological change of the droplet. This tensiometer is suitable for samples with low surface tension of liquids, such as surfactants, surface wetting agents, etc.
3.Suspension surface tensiometer, suspension surface tensiometer is an instrument that uses the equilibrium of liquid droplets in a suspended state to measure surface tension. It measures the surface tension of the liquid by applying different gravitational forces below the suspended droplets. This tensiometer is suitable for surface tension measurement of a wide range of liquid samples.
4.Oscillation tensiometer, oscillation tensiometer is an instrument that uses vibration to measure the surface tension of liquids. It calculates the surface tension by measuring the amplitude or frequency change of a liquid under oscillating conditions. This tensiometer is suitable for liquid samples with different viscosities and surface tensions.
5.Hanging Bead Tension Meter, Hanging Bead Tension Meter is an instrument that uses the gravitational equilibrium state of a sphere suspended on the surface of a liquid to measure surface tension. It calculates the surface tension by measuring the sinking depth of the suspended ball or the required external force. This tensiometer is suitable for surface tension measurement of a wide range of liquid samples.
6.Flying tensiometer, flying tensiometer is an instrument that uses the movement of bubbles or droplets caused by the surface tension of a liquid under external field conditions to measure surface tension. It calculates the surface tension by measuring the motion parameters of air bubbles or droplets under the action of an external field. This tensiometer is suitable for surface tension measurement of a wide range of liquid samples.
To sum up, the surface tensiometer can be divided into various types according to the different measurement principles and application scenarios, such as the annular balance method surface tensiometer, the static drop method surface tensiometer, the suspension method surface tensiometer, the oscillation method surface tensiometer, the hanging bead method surface tensiometer and the flying method surface tensiometer. Each type of tensiometer has its specific measurement principle and scope of application, and users should make a reasonable choice according to the actual needs and application scenarios when choosing a tensiometer, and use and maintain it in strict accordance with the operating instructions to ensure the accuracy and reliability of the measurement results.