Profile Analysis Tensiometers
Advanced instruments for surface and interfacial characterization.
Bubble Pressure Tensiometer
BPA-2S
Dynamic surface tension without limits.
The BPA-2S is our flagship maximum bubble pressure tensiometer, delivering precise dynamic surface tension measurements from less than one millisecond up to 100 seconds. Designed for advanced research, it combines exceptional time resolution, stand-alone operation and scientific accuracy within a single instrument.
<1 ms
Surface age
100 s
Dynamic range
6 Orders
Time interval
The BPA-2S platform
The widest dynamic time window in bubble pressure tensiometry.
The BPA-2S is the flagship instrument of the BPA series, providing precise dynamic surface tension measurements over six orders of magnitude in time. Based on the Fainerman measurement protocol, it accurately separates bubble dead time from bubble lifetime to characterize extremely fast adsorption processes.
From sub-millisecond interface formation to long-term adsorption studies, the BPA-2S enables comprehensive investigation of surfactants, inks, coatings, pharmaceuticals and other dynamic liquid systems using a single measurement platform.
Capabilities
One platform. Endless possibilities.
Discover the measurement capabilities and integrated technologies of the PAT-1P.
Measure dynamic surface tension with exceptional precision over six orders of magnitude in surface age.
Separate bubble dead time and lifetime to obtain reliable dynamic surface tension data below one millisecond.
Investigate micelle formation, inkjet printing and coating applications at extremely short adsorption times.
Operate the instrument independently using the embedded computer, touch display and integrated data storage.
Compare multiple measurements graphically, zoom into adsorption processes and export data directly for scientific evaluation.
Specially designed capillaries enable extremely small bubble volumes and exceptionally short dead times.
Performance
Engineered for reproducible results.
The PAT-2S combines high-resolution imaging, precise mechanics and advanced analysis software to deliver reliable measurement data for demanding interface research.
0.1 ms
Minimum surface age
Capture ultra-fast adsorption processes below one millisecond using specialized capillaries.
6 Orders
Time interval
Dynamic surface tension measurements spanning six orders of magnitude.
0.005mN/m
Resolution
High-resolution pressure analysis for demanding scientific applications.
1 ml
Minimum sample volume
Reliable measurements with minimal sample consumption.
Values may depend on configuration, measurement mode and optional modules.
Measurement principle
Resolving the fastest interfacial processes.
The BPA-2S applies the Maximum Bubble Pressure Method together with the Fainerman measurement protocol to separate bubble dead time from bubble lifetime. This enables highly accurate determination of dynamic surface tension from less than one millisecond up to 100 seconds, providing unique insight into adsorption kinetics, surfactant transport and rapidly evolving liquid interfaces.
Measurement method
Maximum Bubble Pressure
Surface age
<1 ms – 100 s
Protocol
Fainerman Method
Accessories
Extend your BPA-2S.
Configure the BPA-2S with specialized accessories for ultra-fast dynamic surface tension measurements and advanced laboratory workflows.
Accessory
Special Capillaries
Special capillary geometries enable measurements down to 0.1 milliseconds and support extremely small bubble volumes.
Learn moreBPA-2S Configurator
Configure your BPA-2S.
Configure the BPA-2S for ultra-fast dynamic surface tension analysis by selecting capillary systems, software features, connectivity options and laboratory accessories.
Special capillaries
Advanced measurement modes
Stand-alone & remote operation
Special Capillaries
Ultra-fast measurements
SSD Storage
64 GB onboard
Modular system
Select modules, options and accessories individually.
Applications
Engineered for the fastest interfacial processes.
The BPA-2S supports cutting-edge research and industrial process development wherever dynamic surface tension at extremely short adsorption times determines product performance.
Scientific publications
Thousands
Publications and scientific references related to interface characterization.
Trusted for advanced dynamic interface research.
Explore peer-reviewed publications covering maximum bubble pressure tensiometry, ultra-fast adsorption kinetics, surfactant dynamics and high-speed interfacial phenomena.
Verified SINTERFACE instrument use will be clearly distinguished from recommended scientific literature.
Technical information
Scientific performance. Comprehensive specifications.
Explore the complete measurement capabilities, hardware architecture and software features of the BPA-2S Maximum Bubble Pressure Tensiometer.
Dynamic surface tension
Interfacial tension
Maximum bubble pressure method
Bubble dead time determination
Bubble lifetime analysis
Surface tension as a function of physical and adsorption time
Hydrostatic pressure determination
Hydrodynamic correction
Gravitational correction
Viscosity correction
Liquid viscosity estimation
Temperature monitoring and control
Surface and interfacial tension
- Measurement range
- 10–150 mN/m
- Resolution
- 0.005 mN/m
- Surface tension accuracy
- Better than 0.5 %
- Density accuracy
- 2 %
Dynamic measurements
- Standard capillary
- 10 ms – 200 s
- Special capillary
- 0.1 ms – 100 s
- Minimum sample volume
- 1 ml
- Measurement temperature
- 0–100 °C
Standard mode
Constant time mode
Fast scan mode
Increasing flow mode
Short lifetime mode
Density estimation
Viscosity estimation
Custom measurement mode
Up to 180 measurement points in scan modes
Unlimited measurements in constant mode
- Standard mode (M1)
- 20–30 min
- Fast mode (M4)
- 4–6 min
- Operation
- Stand-alone or remote control
- Display
- 7'' TFT color touch display
- Resolution
- 800 × 480 px
- Storage
- 64 GB SSD, USB memory, Network storage
- Ethernet
- 1 GB
- USB
- 2 × USB 2.0, 1 × USB 3.0
- WiFi
- Optional
- DisplayPort
- Up to 1920 × 1200
Windows Embedded Standard WES7
Stand-alone operation
Remote operation
Automatic liquid-level determination
Automatic capillary immersion
Graphical comparison of multiple measurements
Interactive zoom functions
Export to text files
Direct Microsoft Excel export
Automatic and manual critical flow determination
Fainerman measurement routine for ultra-short adsorption times
Built-in storage for up to 180 measurements
Free software updates for one year
- Dimensions
- 300 × 400 × 350 mm
- Weight
- 5 kg
- Operating environment
- 10–50 °C
- Power supply
- 24 VDC
- Power adapter
- 100–240 VAC
- Maximum power consumption
- <15 W
Standard capillaries
Special capillaries
Capillaries of different diameters
Temperature control accessories
Specifications may vary depending on configuration, software version and optional modules.
Downloads
Documentation at a glance.
Access product information, software documentation and technical resources for the BPA-2S.
Additional manuals and software downloads are available through the SINTERFACE customer portal.
Visit download centerBPA-2S
Ready for ultra-fast interface analysis?
Discuss your research or industrial application with our specialists and configure the optimal BPA-2S system for advanced dynamic surface tension measurements.
Application consultationConfiguration supportGlobal technical assistance