Spinning-Drop-Tensiometer SVT 25
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Spinning drop Video Tensiometer for measuring low to ultra-low interfacial tensions

S p i n n i n g D r o p Te n s i o m e t r y Spinning drop tensiometry is the technology of choice for measuring extremely low interfacial tensions. The method is based on the optical contour analysis of a drop. This drop, instead of hanging from a dosing needle and being exposed to gravitation, is located inside of a rotating capillary. ρ₁ with angular velocity ω Enhanced oil recovery (EOR) “Ultra-low” interfacial tensions occur particularly in microemulsions which are used, for example, in enhanced oil recovery. At suitable conditions microemulsions form spontaneously from water, oil and...

Software for an efficient workflow The SVTSoftware supports you in the use of the SVT 25 by easily specifying measurement procedures and in collecting and evaluating data. The software is designed as a modular program for the use under Microsoft Windows®. holders for disposable glass capillaries as well as fast exchange capillary resolution. Fast processes e.g. during oscillation experiments can be captured with up to 3250 frames/s. Once detected the drop is automatically tracked by the movable camera. A highly dynamic measurement drive creates a uniform rotation even at highest rotational...

according to models by Vonnegut, Cayias-Schechter-Wade or Young-Laplace measuring range measuring resolution Rotational drive high dynamic measurement drive rotational speed range rotational speed resolution rotational speed stability in long term experiments rotational speed changes oscillation period: 0.5 s … ∞; max. acceleration: 500 rev/s2 Sample table motorised tilting table tilting range tilting resolution high-performance zoom lens with integrated continuous fine focus zoom range focus range lateral traversing range for following moving drops Camera system 2048 x 1088 pixel with 180...