The surface tension is the property of a liquid that displayes as a elastic stretched membrane. There are several methods of surface tension measurements. The platform offers different devices,depending on the technics and the samples.
- TRACKER, TECKLIS
The device determines the dynamic interfacial tension between 2 immiscible fluids by performing a numerical analysis of the shape of a drop or a bubble.
2 configurations are available :
the devvice allows to measure the interfacial tension between 2 liquids, and also to do interfacial rheology, by sinusoidal variations of the volume.
Characteristics
Automatic or manual drop formation
Surface tension
Range : 0.01 mN/m
Accuracy : +- 0.01 mN/m
Interfacial tension
Range : 0.01 mN/m
Accurancy : +- 0.01 mN/m
pendant drop or bubble
rising drop or bubble
- KIBRON
Languir technic : the principle is to record the compression isotherm of a monolayer.
CHARACTERISTIC
Microbalance range : 0 – 3000 mN/m
Microbalance resolution : 0.06 µN/m
Trough dimensions : width : 80 mm, length : 405 mm, depth : 5 mm
Temperature range : 0 – 50 °C
Ez-Pi+ device is compact, easy to move and very usefull for rapid caracterization. The principle is a miniatuarized Du-Nouy/Wilhemly technic.
characteristic
Measuring range : 1-350 mN/m
Accuracy : 0.01 mN/m
Resolution : 0.001 mN/m (0.2 µg) for 0-100 mg
- KRUSS
The DSA25S allows semi automatic measurement of static and dynamic contact angle and gives assessement of wettability by the surface free energy.
Available measurement process :
- Sessile drop
- Pendant drop and rising drop
