The Interfacial Shear Rheometer ISR-1 allows the measurement of interfacial shear properties of layers between two fluid (liquid/liquid or liquid/gas). It allows unique shear rheological experiments. Shear experiments are most useful for polymer and mixed polymer-surfactant adsorption layers and insoluble monolayers and give access to interaction forces in two-dimensional layers. Dilational interfacial properties are most frequently studied for soluble adsorption layers of surfactants and mixtures of polymers and surfactants.
Interfacial Shear Rheometer ISR-1
The ISR-1 Interfacial Shear Rheometer allows the measurement of interfacial shear elasticity and viscosity of layers between two fluids (liquid/liquid or liquid/gas).
|Range Interfacial Shear Viscosity||1µNs/m to 100 mNs/m|
|Range Interfacial Shear Elasticity||1µPam to 100 mPam|
|Range of frequency||0.2 to 0.02Hz|
|Dimensions (LxWxH)||50x50x70cm (20x20x28’’)|
|Weight||50kg (110 lb.)|
The principle is a torsion pendulum. Different measuring bodies are available to work at liquid surface or interfaces between two immiscible liquids.
- Time dependencies over hours of adsorption time
- Shear elasticity and viscosity of a surface layer
- Frequency range between 0.2 to 0.02 Hz
Drop Pressure Module DPA-1 for PAT-1 Tensiometer$1
This Drop Pressure module is dedicated to measurements of Dynamic Interfacial Tensions of liquids.
Module for Contact Angle measurement$1
The CA-1 is a modular extension of the PAT-1 Drop Bubble Shape Tensiometer for contact angle measurements.
Drop and Bubble Shape Optical Tensiometer PAT-1$1
The Drop and Bubble Tensiometer PAT-1 uses a modern optical method to measure the dynamic Surface Tension and Interfacial Tension of liquids, 0.1 s resolution over a period of seconds up to days.
The instrument is supplied with a computer controlled dosing system.
Foam stability and lifetime Analyzer FA-1S$1
The Foam Analyzer FA-1S for the study of foam drainage and foam stability under strictly defined conditions.
Drop and Bubble Micromanipulator DBMM-1 for PAT-1 Tensiometer$1
The Drop and Bubble Micromanipulator is designed for the study of direct interaction between drops or bubbles.
BPA-1S Bubble Pressure Tensiometer$1
The BPA-1S Maximum Bubble Pressure Analyzer is the choice for very short adsorption times.
Oscillating Drop and Bubble Analyzer ODBA-1 for PAT-1 Tensiometer$1
Oscillating Drop and Bubble Analyzer for dilational elasticity and viscosity determination
Ring and Plate Tensiometer TensioCAD$1
The TensioCAD is a semi-automatic Du Noüy Ring and Wilhelmy Plate Tensiometer for the measurement of Surface Tension and Interfacial Tension.