Spinning Drop Tensiometer – SDT SDT – Krüss

Advanced Interfacial Tension Measurement for Industry Applications

The SDT Spinning Drop Tensiometer is a state-of-the-art solution for measuring interfacial tension with unrivaled precision, offering a broad operational range that extends to exceptionally low values. This instrument is vital for the quality control and development of emulsions and surfactants, featuring immense versatility, minimal sample volumes, and straightforward preparation processes. Its effectiveness is particularly pronounced in the study of mini- and microemulsions’ interfacial behavior, making it an indispensable tool for applications in enhanced oil recovery (EOR), as well as the pharmaceutical and cosmetics industries.

Key Applications and Features

Designed to cater to a diverse range of applications, the SDT excels in: development of emulsions and microemulsions\\; surfactant flooding for EOR\\; formulations in pharmaceuticals and cosmetics\\; enhancement of drug bioavailability\\; food emulsions research\\; and surfactant research. It offers precise interfacial tension measurement through advanced methodologies like the diameter or curvature of a drop in a rotating capillary, with the capacity for repeat measurements displayed collectively for comprehensive analysis.

Innovative Design and Functionality

The SDT combines a high-resolution camera and a motor with exceptional speed stability, eliminating the need for manual measurement observation through intelligent software. Innovations in sample preparation and temperature control streamline operation, while its award-winning design ensures user safety and ease of use. Embodying ergonomics and efficiency, the SDT sets new standards in the field of interfacial tension measurement.

Technical Specifications

Software
  • Software type: ADVANCE
  • Software languages: Chinese (simplified), English, French, German, Japanese, Korean, Portuguese, Russian, Spanish
  • Software modules: Interfacial tension of liquids (recommended) Drop positioning module (optional) Adhesion Analysis (optional)
Spinning drop
  • Results: interfacial tension
  • Range: 1E-6 to 2000 mN/m
  • Resolution: 1E-6 mN/m
  • Models: Vonnegut Young-Laplace
Sample dimensions
  • Min. recommended sample volume: surrounding liquid: 1 mL drop liquid: 1 to 4 μL
Instrument dimensions
  • Footprint: 360 mm × 240 mm (W × D)
  • Height: 325 mm
  • Weight (without accessories): 15 kg
Environment
  • Operating temperature: 15 to 30 °C
  • Humidity: without condensation
Interfaces
  • PC: USB 3.0
  • Auxiliary: RS232
  • Thermostat: quick couplings
Housing and peripherals
  • Camera parking system: protecting the camera when not in use
  • Touch panel: glass surface with capacitive sensing
Power supply
  • Voltage: 100 to 240 V
  • Power consumption: max. 250 W
  • Frequency: 50 to 60 Hz
Temperature measurement
  • Range: -10 to 180 °C
  • Resolution: 0.1 °C
  • Precision: ±0.1 °C
  • Locations: heating element (internal sensor) capillary (infrared sensor)
Temperature control
  • Type of temperature control: electric (ambient to 120 °C) liquid (-10 to 120 °C, with optional flow-through thermostat)
  • Range of temperature control: -10 to 120 °C
Capillary
  • Septum free filling system: for easy sample preparation
  • Quick lock loading: for fast sample exchange
  • Drop launch mechanism: drop creation at the press of a button
Camera system (standard)
  • Connection: USB 3.0
  • Performance: 15 fps at 2560 × 1920 px
Optics (standard)
  • Focus: fixed
  • Zoom: 1.4× zoom, fixed
  • Field of view: 6 mm × 4.5 mm
  • Resolution of optics: 2.3 μm
Illumination
  • Types: high power monochromatic LED and stroboscope
  • Wave length, dominant: 469 nm
  • Field of light: 57 mm × 7 mm (D × H)
Sample stage
  • Tilting: ±20°
  • Resolution (tilting): 0.1°
Capillary drive
  • Resolution: 0.1 rpm
  • Long term stability: ±1 rpm

FAQ - Spinning Drop Tensiometer – SDT SDT – Krüss

What is the Spinning Drop Tensiometer - SDT SDT - Krüss?

The Spinning Drop Tensiometer (SDT SDT - Krüss) is an advanced instrument designed for measuring interfacial tension with high precision. It's ideal for quality control and development of emulsions, surfactants, and for applications in enhanced oil recovery, pharmaceuticals, and cosmetics industries.

What are the key applications of the SDT?

The SDT is versatile, supporting a wide range of applications including the development of emulsions and microemulsions, surfactant flooding for enhanced oil recovery, formulations in pharmaceuticals and cosmetics, food emulsion research, and surfactant research.

What makes the SDT's design and functionality innovative?

It features an award-winning design with a high-resolution camera and motor offering exceptional speed stability. Innovations in sample preparation, temperature control, and intelligent software automate processes, enhancing user safety and operational efficiency.

What are the software and hardware specifications of the SDT?

The SDT includes ADVANCE software available in multiple languages, with optional modules for enhanced functionality. It offers precise measurements with a range of 1E-6 to 2000 mN/m for interfaced tension. The instrument has a small footprint, requires minimal sample volumes, and provides easy sample preparation with its septum free filling system and drop launch mechanism.

How does the SDT measure temperature, and what is its range?

Temperature is measured using both an internal sensor within the heating element and an infrared sensor at the capillary, with a range from -10 to 180 °C. The precision of temperature measurement is ±0.1 °C, ensuring accurate control during experiments.

What are the environmental requirements for operating the SDT?

The SDT operates best at a temperature range of 15 to 30 °C and in humidity conditions without condensation. These conditions ensure the reliability and accuracy of measurements.

Is there any special equipment needed for the SDT’s operation?

Aside from a PC with a USB 3.0 connection for the software and data handling, the SDT integrates smoothly with existing setups due to its USB and RS232 interfaces and quick couplings for thermostat connection. Optional modules and accessories can enhance its functionality but are not required for basic operation.

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