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ODG

ODG

Oscillating Drop Generator for Interfacial Rheology

 

APPLICATION SCOPES:  

Emulsion systems, Foam Research, Thin Films, Mono- and Double-layer systems, etc.

METHODS:

Oscillatory Pendant Drop with Linear and Non-linear FT Analysis to work with OCA20, OCA25, OCA30, OCA35, OCA40, OCA50, etc.

FEATURES:

  • Software controlled, piezoelectric device for the generation of liquid oscillating and relaxing drops.
  • Optical measurement of drop deformation response for the investigation of viscoelastic properties (e.g. real and imaginary part of the interfacial dilatational modulus, and for linear and nonlinear interfacial rheology investigation) of emulsion systems, liquid/gas or liquid/liquid interfaces in several different excitation modes, independently;
  • Harmonic volume (area) mode
  • Relaxational mode
  • Programmable wave forms: sinusoidal wave form for drop oscillations and step function for drop relaxations control for drop volume and drop area for volume jump, temperature jump, surface area jump, etc. study
  • Dynamic surface/interfacial tension measuring range: 0.01…2000 mN/m
  • Frequency range of drop oscillation: 0…50 Hz (viscosity dependant)
  • Frequency of pressure sensor: > 10 kHz
  • Data analysis rate of the pressure sensor: ← 2 kHz

 

 Most Updated Specs and Pricing

DCAT LBE

DCAT LBE

High Resolution Dynamic Contact Angle Tensiometer with Langmuir-Blodgett Extension

 

Application scopes:

Gibb's Absorption Isotherm, CMC, Interfacial Rheology, Static / Dynamic Surface Tension / Interfacial Tension, Surface Excess, etc.

Features:

• LBE can use with all the DCAT dynamic contact angle measuring device / tensiometer

• For measurements of liquids at temperatures up to 90 °C according to the Langmuir-Blodgett Method in combination with Wilhemy Plate Method for the measurement of surface tension.
• All software dependent functions in combination with the software packages.
• Electrical and software controlled Langmuir Blodgett trough module with TV 70

• Optional software tool for Surface Rheology Research on Surfactant Mono-layer

 

 

Most Updated Specs and Pricing

 

For any modular configurations that you may require, contact us to discuss your exact applications and objectives, and we will work with you to configure a unit for your EXACT parameters. 

Available Custom Modular Options include, but are not limited to:

SVT20

SVT20

Advanced Spinning Drop Video Tensiometer

 

APPLICATION SCOPES:

Regular or Ultra-low Surface/Interfacial Tension Measurements and Interfacial Rheology Research.  A new concept of doing Spinning Drop Measurements; Video-based Tensiometer with rotational speed up to 20,000 RPM capable of reporting interfacial visco-elasticity.  Most widely used in oil, petroleum, emulsion, detergent, cosmetic, pharmaceutical and healthcare industries. But not limited to.

METHODS:

Spinning Drop Method.

FEATURES:

The SVT 20 is used for the software controlled and video supported measurement of:

  • Static and time dependent interfacial tension between two not completely miscible liquids.
  • Two and three-dimensional extensional relaxation of viscoelastic liquids and liquids droplets encapsulated or enclosed in membranes.
  • Yield point of e.g. liquid crystalline materials.
  • Thermal expansion coefficients of liquids.
  • All measurements are performed according to the Spinning Drop and Oscillating Drop Method.

The 64-bit Windows 7 & 8 compatible software developed for the SVT 20 offers:

  • Time dependent control of rotational speed as well as the adjustment of the capillary position in height and tilt.
  • Recording and evaluation of video sequences for the measurement of fast relaxational vibrations of drops.
  • Calculation of interfacial tensions from the shape of rotating drops (spinning drops) according to the Young-Laplace Equation as well as according to the Vonnegut approximation for sufficiently extended droplets.
  • Calculation of relaxational modules, yield points and other rheological parameters.
  • An extended liquid data base with more than 140 parameter entries.

 SVT 20/TPC180

SVT20 Spinning Drop Video Tensiometer

 

 Most Updated Specs and Pricing

OCA50

OCA50

Fully Automated Contact Angle/Drop Shape Analysis Instrument

Methods:

  • Sessile Drop and Captive Bubble Methods for contact angle measurement on plane, convex or concave surface.
  • Tilting Method for advancing and receding contact angle measurements.
  • Programmable advancing/receding contact angle measuring via Needle-in-Drop Method.
  • Pendant Drop Method for surface and interfacial tension measurements, determination of the polar and disperse components of the surface tension.
  • Lamella Method for surface tension and contact angle measurements of highly viscous materials.
  • Liquid Bridge Method - innovative measurement setup and analysis of the three phase systems.
  • Surface energy (and its components) calculation based on contact angle measurements.
  • Results - 9 methods for calculation, representation of wetting envelopes and work of adhesion.

 

Features:

  • High throughput fully automated time saving industrial device for contact angle and drop shape analysis.
  • Automated files for fully software controlled multiple contact angle, drop shape measurements and data analysis.
  • Intuitive setup of the automation files for automated multiple measurements.
  • Precise and easy handling of liquid dispensing- up to 6 direct dosing systems.
  • Video measuring system with USB camera capturing at various rates (upUSB-HSC, etc.)
  • High-precision methods for evaluating drop contours in combination with statistical error analysis.
  • Access to database of liquids and solids- properties of more than 200 materials for quick reference of density, surface, interfacial tension and other related data, also for 9 methods of surface energy analysis including related citations.

Specifications:

  • Up to six software controlled electronic syringe units ES.
  • Maximum sample dimensions (L x W x H): • 220 x ∞ x 70 mm.
  • Measuring range for contact angles: 0…180°; ± 0.1° measuring precision of the video system.
  • Measuring range for surface and interfacial tension: 0.01…2000  mN/m resolution: ± 0.01 mN/m.
  • Dimensions (L x W x H): 680 x 310 x 370 mm.
  • Weight: 22 kg.
  • Power supply: • 100…240VAC; 50…60Hz; 100 W.

Options:

  • Variety of dosing systems for dispensing and analyzing tiny droplets (pico-, nano- and micro-liter droplets).
  • Various temperature and environment (humidity, pressure and vaccum) control systems (up to 1,800°C, 100%, 750 bars, etc.)
  • Variety of sample holders for foils, papers, contact lenses, fibers, film, etc.
  • Wide range optical glass cuvettes for captive bubble, interfacial tension, interfacial rheology measurements.
  • Electro-wetting platform EWP100 for analysis of sessile and pendant drops behavior in controlled electrical field.
  • All motorized functions to be controlled by intuitive touch panel TP 50.
  • Electronic tilting base units TBU90E, TBU95E, and OTBU. 
  • Electronic turn table with vacuum fixation ETT/VAC for silicon wafer of various diameters.
  • Heated dosing devices NHDs for molten polymer or metal(up to 700 °C).
  • Interfacial rheology through the ODG25/ODG50/ESr-O- Oscillation / relaxation analysis option for the real and imaginary part of the interfacial dilatational modulus.
  • Top view video system TV-VS
  • And more...

 

 Most Updated Specs and Pricing

 

For any modular configurations that you may require, contact us to discuss your exact applications and objectives, and we will work with you to configure a unit for your EXACT parameters. 

Available Custom Modular Options, which include, but are not limited to: