TRACKER™ Automatic Drop Tensiometer

for Surface Tension & Interfacial Rheology Study

Tensiometers are used in research, development and quality control to study the properties of interfaces between immiscible fluids. Our range of automatic drop tensiometers TRACKER™ helps you characterize, easily and precisely surfaces & interfaces properties. Measurements provide valuable data, saving time and money in formulating products.

Powerful Image Analysis Software

TRACKER™ software uses algorithms to analyze the drop's profile and to fit it with models based on the Young-Laplace equation in order to determine surface tension, interfacial tension or contact angle.

Full range of measurements

TRACKER™ determines the dynamic interfacial tension between two immiscible fluids by performing a numerical analysis of the shape of a pendant or rising drop or bubble. 

Characteristics measured

  • Surface tension (liquid/gas)

  • Interfacial tension (liquid/liquid)

  • Contact angle (liquid/solid)

  • Dynamic contact angle

  • Interfacial Dilatational Rheology

    • Viscoelastic modulus

    • Coefficient of rigidity

  • Automatic CMC

  • Temperature & Pressure

Smart Modular Design

TRACKER™ is adaptable and allows you to choose one or more modules that fit better to your applications 

  • Phase exchange

  • Piezoelectric cell for higher frequency oscillation

  • Pressure sensor to measure Laplace pressure in the bubble

  • Automatic CMC

  • Pressure Cell 200°C/200bar

For Lots of Applications...

Crude oil: emulsion stability for separation,influence of surfactants for EOR, dynamic contact angle between oil/rock/liquid phases.

Cosmetics: emulsion stability, formulation, dynamic contact angle between container/emulsion.

Food: stability of emulsion before getting frozen (ice cream), influence of proteins, sugar or alcohol impact on the bubbles' size.

Bitumen: wettability, emulsion properties at different temperatures, dynamic contact angle.

Fuel formulation: characterization of the coalescence of an emulsion, wettability.

Lubricant: contact angle between lubricant/material, influence of surfactants on the wettability

Tracker™ Automatic Drop Tensiometer modules

Measurements overview


  • Automatic Critical Micelle Concentration (CMC)

  • High frequency (10Hz)

  • Dense Phase exchange

  • Drop Phase exchange

  • Bubble pressure

  • Pressure cell up to 200 bar / 200°C


  • Surfactant characterization

  • Efficiency/Effectiveness of the surfactants

    • Kinetic​s / Capacity to adsorb/absorb

    • Capacity to decrease the surface tension

    • Quantity of surfactant to saturate the surface

  • Surfactant behavior on the surface

  • Wettability of the surface

  • Properties of biological surfactants (protein, lipids ...)

  • Competition of surfactants

Phase Exchange

The PHASE EXCHANGE option completes the technique by measuring the surface or interfacial tension while the dense phase or the drop phase is exchanged during measurement.

Go to link