in this video, we show you how to use an optical surface tensiometer to measure surface tension of orange juice. To evaluate the reliable of ADSA-RealDrop, we changed volume of liquid during measurement process, and you can find out that surface tension of orange juice will not be changed via changing surface area. So, it means our method named ADSA-RealDrop (Axisymmetric drop shape analysis) is reliable for measurement of surface tension with very small volume. Visit http://www.usakino.com to find more information of contact angle meter and surface tensiometer.
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