There are various techniques to measure the Surface and Interfacial Tensions of liquids and solutions containing surfactants.
|Method||Time of absorption|
|Ring & Plate Tensiometer||10 seconds to hours|
|Bubble Pressure Tensiometer||0.1 milliseconds to 100 seconds|
|Drop and Bubble Shape Tensiometer||1 second to hours|
|Drop Volume Tensiometer||0.2 seconds to 30 minutes|
The Du Noüy Ring and Wilhelmy Plate Tensiometers are the most frequently used techniques. They are the simplest methods for Static Surface Tension measurements.
The Bubble Pressure Tensiometer is the method of choice for very short adsorption times, down to milliseconds.
The Drop and Bubble Shape Analyzer is an optical Tensiometer.
The principle of the method is to accurately determine the shape of a drop or bubble.
We offer two models:
- The PAT-2 manual Drop Bubble Tensiometer
- The PAT-1 automatic Drop Bubble Tensiometer. This instrument is a modular system with different options: Contact Angle, Drop Bubble Micromanipulator, Drop Pressure, Oscillating Drop Bubble Analyzer
The Drop Volume Tensiometer is a simple instrument for Surface and Interfacial Tension of liquids.
The Foam Analyzer is a unique instrument to study foam drainage and foam stability under strictly defined conditions.
Interfacial Shear Rheometer
The Interfacial Rheometer allows the study of rheology (elasticity and viscosity) at interfaces.