Introduction
The SVT 25 Spinning Drop Video Tensiometer is designed for measuring low to ultra-low interfacial tensions using spinning drop tensiometry. This method involves optical contour analysis of a drop within a rotating capillary, allowing for precise measurement of interfacial tensions.

Spinning Drop Tensiometry
This technique is ideal for measuring extremely low interfacial tensions, particularly in microemulsions used in enhanced oil recovery (EOR). The method involves the deformation of a drop due to centrifugal force, with interfacial tension counteracting this deformation. The SVT 25 can measure tensions in superheated aqueous solutions up to 130°C.

Interfacial Rheology
The device also allows for the analysis of interfacial rheology, examining how interfaces react to changes in area. This is achieved by varying the rotational velocity in an oscillating manner.

SVT 25 Features
The SVT 25 is a compact optical instrument offering high precision and reproducibility. It features a tilting table for easy drop positioning, a high-performance camera for detailed analysis, and a dynamic measurement drive for uniform rotation. The device supports rapid sample exchange and easy cleaning.

Temperature Control
The SVT 25 can simulate various environmental conditions with a temperature range from -30°C to 180°C. It is equipped with a specially designed capillary for high-pressure tolerance.

Software Capabilities
The SVTSoftware facilitates efficient workflow management, offering modules for interfacial tension measurement (SVTS 20), oscillation analysis (SVTS 21), and membrane-covered drop analysis (SVTS 22).

Technical Data
The device supports a wide range of interfacial tension measurements and offers high-resolution rotational speed control. It includes a motorized tilting table, high-performance optics, and a USB 3 camera system. Temperature control is achieved via various methods, and the device is controlled through a TP 50 control panel.

Contact Information
For more information, contact DataPhysics Instruments GmbH at their Filderstadt location or visit their website.