Profile Analysis Tensiometers
Advanced instruments for surface and interfacial characterization.
Interfacial Shear Rheometer
ISR-1
Measure the mechanics of liquid interfaces.
The ISR-1 is a highly sensitive interfacial shear rheometer designed to quantify the shear elasticity and viscosity of adsorption and spread layers at liquid interfaces. Based on the torsion pendulum principle, it enables measurements that are beyond the capabilities of conventional forced-oscillation systems.
1 μNs/m
Shear viscosity
0.02–0.2 Hz
Frequency range
1 μPam
Shear elasticity
The ISR-1 platform
High-sensitivity interfacial shear rheology.
The ISR-1 measures the viscoelastic properties of liquid interfaces using the torsion pendulum principle. Designed for highly sensitive interfacial shear rheology, it enables reliable characterization of adsorption layers and Langmuir films that cannot be investigated with conventional forced-oscillation instruments.
Its exceptional sensitivity makes the ISR-1 particularly suitable for weak, dilute and soft interfacial films while providing long-term studies of structural evolution over extended adsorption times.
Capabilities
One platform. Endless possibilities.
Discover the measurement capabilities and integrated technologies of the PAT-1P.
Measure the shear elasticity and shear viscosity of liquid interfaces with exceptional sensitivity.
Highly sensitive torsion pendulum measurements enable characterization of soft interfacial layers beyond the limits of conventional rheometers.
Investigate Gibbs adsorption layers and Langmuir monolayers at liquid/gas and liquid/liquid interfaces.
Different measuring bodies support experiments at free surfaces and liquid/liquid interfaces.
Perform reproducible shear rheology measurements between 10 °C and 50 °C.
Monitor structural changes of interfacial films over extended adsorption times.
Performance
Sensitivity for the softest interfaces.
The ISR-1 is engineered to quantify weak interfacial structures that cannot be reliably measured with conventional forced-oscillation systems.
1 µNs/m
Minimum shear viscosity
Resolve extremely weak viscous responses in soft and dilute interfacial layers.
1 µPam
Minimum shear elasticity
Detect highly sensitive elastic responses at liquid interfaces.
0.02–0.2Hz
Frequency range
Perform low-frequency torsion-pendulum measurements with different measuring bodies and torsion wires.
10–50°C
Temperature control
Study interfacial layer formation under controlled thermal conditions.
Values may depend on configuration, measurement mode and optional modules.
Measurement principle
Interfacial structure through torsional motion.
The ISR-1 applies the torsion pendulum principle to determine the shear elasticity and shear viscosity of interfacial layers. A measuring body positioned at a liquid/gas or liquid/liquid interface responds to torsional excitation, allowing the viscoelastic properties of weak adsorption and spread layers to be quantified with exceptionally high sensitivity.
Measurement principle
Torsion pendulum
Interfaces
Liquid/gas & liquid/liquid
Measured properties
Shear elasticity & viscosity
Measurement Accessories
Configure your experimental setup.
Adapt the ISR-1 to different interfacial rheology experiments with specialized measuring bodies, temperature control and laboratory accessories.
Surface Measurements
Standard Measuring Body
Standard measuring body for interfacial shear rheology at liquid/gas interfaces with excellent sensitivity for adsorption layers.
Learn more
Liquid/Liquid Interfaces
Bi-Conical Measuring Body
Specialized measuring body for shear rheology experiments at liquid/liquid interfaces and weak interfacial films.
Learn moreISR-1 Configurator
Configure your ISR-1.
Configure the ISR-1 with the appropriate measuring bodies, temperature-control accessories and laboratory equipment for your interfacial shear rheology experiments.
Measuring bodies
Temperature control
Laboratory accessories
Standard Measuring Body
Liquid/Gas Interfaces
Bi-Conical Disc
Liquid/Liquid Interfaces
USB Cable
Instrument Control
Modular system
Select modules, options and accessories individually.
Applications
Designed for interfacial rheology research.
The ISR-1 enables highly sensitive characterization of interfacial shear elasticity and viscosity for adsorption layers, Langmuir films and soft interfacial structures in both fundamental research and industrial development.
Scientific publications
Thousands
Publications and scientific references related to interface characterization.
Supporting advanced interfacial rheology research.
Explore peer-reviewed publications covering interfacial shear rheology, adsorption layers, Langmuir films, protein interfaces and viscoelastic characterization using the torsion pendulum principle.
Verified SINTERFACE instrument use will be clearly distinguished from recommended scientific literature.
Technical information
Precision for interfacial shear rheology.
Explore the complete measurement capabilities, hardware configuration and technical specifications of the ISR-1 Interfacial Shear Rheometer.
Interfacial shear viscosity
Interfacial shear elasticity
Torsion pendulum measurement principle
Adsorption (Gibbs) layers
Langmuir monolayers
Liquid/gas interfaces
Liquid/liquid interfaces
Long-term interfacial ageing studies
Temperature-controlled experiments
Interfacial shear measurements
- Shear viscosity
- 1 μNs/m – 100 mNs/m
- Shear elasticity
- 1 μPam – 100 mPam
- Frequency range
- 0.02 – 0.2 Hz
- Time resolution
- Approx. 1 minute
Angular resolution
- Torsion head
- 0.01°
- Position sensor
- 0.01°
Adsorbed (Gibbs) layers
Spread (Langmuir) layers
Liquid/gas interfaces
Liquid/liquid interfaces
Different measuring bodies
Long-term adsorption studies
Real-time acquisition of interfacial shear rheology data
Shear elasticity and viscosity evaluation
Time-dependent viscoelastic analysis
Oscillation and torsion pendulum analysis
Graphical visualization of rheological measurements
Comparison of multiple experiments
Data export for further scientific evaluation
Windows-compatible measurement software
RS-232 and USB communication
- Temperature range
- 10–50 °C
- Control
- Temperature-controlled measurement cell
- Dimensions
- 500 × 500 × 700 mm
- Weight
- 40 kg
- Power supply
- 100–240 VAC, 50–60 Hz
- Power consumption
- 110 W
Standard measuring body for liquid/gas interfaces
Bi-conical measuring body for liquid/liquid interfaces
Temperature-controlled jacket
Standard beaker
USB communication cable
Power supply
Specifications may vary depending on configuration, software version and optional modules.
Downloads
Documentation at a glance.
Access product information, technical documentation and supporting materials for the ISR-1 Interfacial Shear Rheometer.
Additional manuals and software downloads are available through the SINTERFACE customer portal.
Visit download centerISR-1
Ready to characterize interfacial structure?
Talk to our specialists about your interface, measuring body, temperature requirements and the right ISR-1 configuration for your research.
Application consultationConfiguration supportGlobal technical assistance