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Contact Angle & Surface Tension Tensiometry & Surface/Interfacial Tension Measurement

SVT – Spinning drop Video Tensiometer

Part Number: SVT

The SVT 25 is a specialized optical instrument for measuring ultra-low interfacial tensions and dynamic interfacial rheology using spinning drop tensiometry. Ideal for refining surfactant formulations, studying emulsions, and enhancing oil recovery applications, it features a precision rotation stage, temperature-controlled capillaries, and automated drop tracking via a USB3 video camera.

                                                
                                                    Measure Ultra-Low Interfacial Tensions (< 0.1 mN/m)                                                
                                            
                                                The spinning drop method enables precise measurement of interfacial tensions in microemulsions and surfactant systems, crucial for enhanced oil recovery research .

                                                
                                                    High-Speed Rotation & Oscillatory Control                                                
                                            
                                                Operates up to 20,000 rpm, supports sinusoidal speed profiles, and has max acceleration rate of 500 rev/s², enabling dynamic interfacial rheology and fast-response analysis .

                                                
                                                    High-Resolution Imaging & Auto Drop Tracking                                                
                                            
                                                Equipped with a USB3 camera (2/3″ sensor, 2048×1088 px, ≤ 3250 fps) and motorized optics for live drop tracking and strobe LED lighting .

                                                
                                                    Automated Drop Positioning with Tilting Table                                                
                                            
                                                Motorized tilting stage and fast-exchange capillaries allow quick drop positioning and high throughput; disposable capillaries simplify cleanup .

                                                
                                                    Temperature-Controlled Measurements (–30 °C to +180 °C)                                                
                                            
                                                Capable of testing both oil and aqueous systems—even superheated up to 130 °C—for studying surfactant behavior under extreme conditions .

                                                
                                                    User-Friendly with TP 50 Touchscreen Panel                                                
                                            
                                                Intuitive touchscreen control handles all functions including rotation, tracking, temperature, and calibration—all integrated into a compact bench-top design .

Specification	Value
Measurement Type	Spinning Drop Video Tensiometry
Rotational Speed	0 – 20,000 rpm; acceleration up to 500 rev/s²
Camera	USB3, 2/3″ sensor, 2048×1088 px, up to 3,250 fps
Optics	6.5× zoom lens, fine focus
Lighting	LED with strobe and slit diaphragm control
Temperature Range	–30 °C to +180 °C (water-based tests up to 130 °C)
Sample Cell	Fast-exchange capillaries; optional disposable tubes
Software Modules	SVTS 20 (IFT), SVTS 21 (Oscillation), SVTS 22 (Membrane-drop)
Control Interface	TP 50 touchscreen panel