OPO Lasers

All molecules have surface tensions, it is the cohesive force between two molecules. Measuring the tension between molecules could provide researchers a lot of information about the properties of the molecule. (i.e. the effectiveness of a cleaning product can be measured by the level of wettability determined by the level of surface tension) Tensiometers are use measure the surface & interfacial tension between liquids-liquid & liquid-gas. Biolin Scientifics provided two types of tensiometers; force tensiometers & optical tensiometers.

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Force Tensiometer

Most commonly used method, the force Tensiometer used for measuring surface tension for international standards. Force tensiometer by dipping a hyper-sensitive probe into the intended sample, the probe would then measure the surface tension when the sample comes into contact with it.

Optical Tensiometer

Optical Tensiometer uses the pendant drop analysis to determine the surface & interfacial tension. This is achieved by using a needle to produce a single drop of the sample. The drop is then analysed by measuring the curve angle. Optical Tensiometers are great for determining the contact angle.

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