TRACKER™ Automatic Drop Tensiometer & Dilatational Interfacial Rheometer

The Most Powerful and Versatile Drop Tensiometer / Dilatational Interfacial Rheometer for your laboratory.

TRACKER is the only drop shape analysis technics that measures surface / interfacial tension, interfacial rheology and adsorption kinetics with a precise control of the drop / bubble volume, fully driven by the software, making a powerful tool:
— To understand the behaviour of molecules and their interactions at interfaces,
— To measure the hydrophobic/hydrophilic character of surfaces,
— To Discriminate the foaming and emulsifying properties of surface active molecules.

Among other scientific parameters, Surface / Interfacial tension and dilatational interfacial rheology are key data  to characterize surface active molecules, to optimize the stability of formulations, to improve the performance of industrial processes, to check the quality of ingredients.

TRACKER™ Automatic Drop Tensiometer determines the dynamic surface / interfacial tension between two immiscible fluids by performing a numerical analysis of the profile of a drop or bubble (Axisymmetric Drop Shape Analysis)

Full range of measurements
Pendant drop or bubble         —  Surface tension (liquid/gas)

— Rising drop or bubble              —  Interfacial tension (liquid/liquid)

— Sessile drop                              —  Adsorption/desorption kinetics

— Captive drop or bubble            —  Contact angle (liquid/solid)

— Temperature                             —  Dynamic contact angle

— Pressure                                    —  Interfacial Dilatational Rheology
                                                —  Viscoelastic modulus
                                                —   Coefficient of rigidity 

                                                — Automatic CMC 

Drop Shape Analysis
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.

Smart Modular Design

— 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.
Foam/emulsion stability, formulation, dynamic contact angle.
encapsulation, gas solubility, emulsion stability.
Food foams properties, stability of frozen emulsion (ice cream), influence of proteins, sugar or alcohol impact on the bubbles' size.
Fiel & Bitument: 
wettability, emulsion properties , dynamic contact angle.
contact angle between lubricant/material, influence of surfactants on the wettability