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DataPhysics - SVT - Spinning drop video tensiometer

The spinning drop video tensiometers of the SVT series are special-purpose optical instruments for measuring extremely low interfacial tensions and rheological properties. This measuring technique offers unrivalled possibilities for the analysis of surfactant effectiveness in the development of emulsions or in the enhanced oil recovery.

The spinning drop video tensiometers of the SVT series are special-purpose optical instruments for measuring extremely low interfacial tensions and rheological properties. This measuring technique offers unrivalled possibilities for the analysis of surfactant effectiveness in the development of emulsions or in the enhanced oil recovery.

Key features

  • Measurement of low to ultra-low interfacial tensions based on the contour of spinning drops according to models by Vonnegut, Cayias-Schechter-Wade or Young-Laplace
  • Highly dynamic measurement drive with 0 … 20000 rev/min
  • Oscillation measurements with oscillation periods of 0.5 s …∞ and max. acceleration of 500 rev/s2
  • Motorised tilting table
  • Fast 6.5-fold zoom lens with integrated continuous fine focus
  • Motorised movable optics for automatically following moving drops
  • High-performance camera with USB 3 interface, 2/3″ sensor, max. 2048 x 1088 pixel, max. 3250 frames/s
  • Precise, fast and easy to use capillary exchange system
  • LED-lighting with strobe function and adjustable slit diaphragm
  • Temperature controlled measuring cells for temperatures ranging from -30 °C to 180 °C
  • Sspecial capillary for measuring water-based solutions at up to 130 °C
  • Automatic calibration function for correcting optical distortions caused by the capillaries (cylindrical lens effects)
  • TP 50 control panel with touch screen and precision control wheel
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DataphysicsDataPhysics Instruments offers a wide range of measuring devices for the analysis of the chemical and physical properties of surfaces and interfaces. The product range comprises optical contact angle measuring and contour analysis systems, dynamic contact angle measuring devices and tensiometer, as well as spinning drop tensiometer and analysis systems for liquid dispersions. The measuring devices are complemented by an extensive array of accessories and extensions like for example a humidity generator. Hence a tailor-made combination of measuring device and accessories can easily be found to take on your individual surface and interfacial measuring challenges.
[DataPhysics, Spinning drop video tensiometer, Tensiometer SVT]