Profile Analysis Tensiometers
Advanced instruments for surface and interfacial characterization.
Drop Pressure Analyser
DPA-1M
Direct capillary pressure analysis for dynamic interfaces.
The DPA-1M extends the PAT-1M with direct capillary pressure measurements for dynamic surface and interfacial tension analysis using constant and growing drops.
Direct
Capillary pressure measurement
3 modes
Experiment configurations
PAT-1M
Compatible platform
The DPA-1M module
Direct pressure measurement for dynamic interface characterization.
The DPA-1M extends the PAT-1M with direct capillary pressure analysis for constant and growing drops. By measuring the pressure inside a drop at the capillary tip, the module provides precise access to dynamic surface and interfacial tension during rapidly evolving interfacial processes.
The method combines accurate pressure sensing with controlled liquid delivery through the PAT-1M dosing system. This makes it possible to follow interfacial changes in real time and investigate adsorption behavior under defined experimental conditions.
Measurement capabilities
Advanced oscillating drop and bubble analysis.
Explore the experimental capabilities of the DPA-1M.
Measure the pressure inside a constant or growing drop directly at the capillary tip for accurate determination of dynamic surface and interfacial tension.
Maintain a stable drop geometry to investigate interfacial adsorption, equilibration and time-dependent surface properties.
Continuously increase the drop volume to study rapid adsorption processes and the evolution of dynamic interfaces.
Generate continuous liquid flow for maximum drop pressure experiments and characterize dynamic surface tension at very short surface ages.
Accurate pressure transducers continuously monitor capillary pressure, providing reliable input for dynamic interfacial tension calculations.
Combine automated liquid dosing, optical observation and direct pressure analysis within the modular PAT-1M platform.
Performance
Technical performance at a glance.
Key operating parameters and measurement capabilities of the DPA-1M.
Direct
Pressure measurement
Direct capillary pressure measurement provides the foundation for accurate dynamic surface and interfacial tension analysis.
3
Experiment modes
Standard, Growing Drop and Maximum Drop Pressure experiments support a wide range of dynamic interface investigations.
Real-time
Pressure acquisition
Continuously monitor pressure, surface tension, drop geometry and related parameters throughout each experiment.
PAT-1M
Integrated platform
Fully integrated into the PAT-1M system, combining automated dosing, optical imaging and pressure analysis.
Values may depend on configuration, measurement mode and optional modules.
Measurement principle
Direct capillary pressure for dynamic interface analysis.
The DPA-1M determines dynamic surface and interfacial tension by directly measuring the capillary pressure inside a constant or growing drop. A high-precision pressure sensor continuously records pressure changes while the integrated dosing system controls drop formation, enabling accurate characterization of rapidly evolving liquid interfaces.
Measurement principle
Direct capillary pressure
Experimental modes
Constant & growing drops
Scientific output
Dynamic surface & interfacial tension
Compatible instrument
Designed exclusively for the PAT-1M platform.
The DPA-1M is an integrated expansion module for the PAT-1M Profile Analysis Tensiometer. It combines direct capillary pressure analysis with the PAT-1M optical system, automated dosing and measurement software within a single modular research platform.
Applications
Supporting dynamic interface research.
The DPA-1M enables direct investigation of dynamic surface and interfacial tension during interface formation. Its capillary pressure method is particularly suited for studying adsorption kinetics, transient interfacial phenomena and rapidly evolving liquid systems.
Scientific publications
Research
Publications and scientific references related to interface characterization.
Supporting dynamic interface research.
Direct capillary pressure measurements have been applied in numerous studies investigating dynamic surface tension, adsorption kinetics, surfactant systems and transient interfacial phenomena. Explore publications using the DPA-1M and related measurement methods.
Our publication database identifies verified studies performed with SINTERFACE instruments.
Technical information
Detailed performance and system specifications.
Explore the measurement capabilities, operating modes, hardware configuration and technical specifications of the DPA-1M module.
Constant drop measurements
Growing drop measurements
Maximum drop pressure measurements
Dynamic surface tension
Dynamic interfacial tension
Direct capillary pressure determination
Pressure monitoring
Optical drop observation
Measurement principle
- Method
- Direct capillary pressure measurement
- Measurement modes
- Constant Drop, Growing Drop, Maximum Drop Pressure
Pressure measurement
- Pressure sensor
- Integrated precision pressure sensor
- Pressure transmission
- Pressure chamber with capillary system
Optics and imaging
- Optical platform
- PAT-1M
- Image monitoring
- Integrated camera observation
Pressure chamber
Pressure sensor
Capillary system
Liquid reservoir
Dosing system
Control valve
Electronic control unit
Internal PAT-1M interface
Pressure sensor calibration
Camera calibration
Real-time pressure acquisition
Real-time surface tension calculation
Constant drop control
Growing drop control
Maximum Drop Pressure experiments
Programmable experiment timelines
Experimental data export
Compatibility
- Instrument platform
- PAT-1M
- Module integration
- Internal expansion module
Capillaries
Specifications may vary depending on configuration, software version and optional modules.
Downloads
Documentation and technical resources.
Access operating instructions, technical documentation and supporting resources for the DPA-1M Drop Pressure Analysis Module.
Additional manuals and software downloads are available through the SINTERFACE customer portal.
Visit download centerDPA-1M
Extend the PAT-1M with direct capillary pressure analysis.
Discuss your application, experimental workflow and measurement requirements with our specialists. The DPA-1M integrates seamlessly into the modular PAT-1M platform for advanced dynamic surface and interfacial tension measurements.
Application consultationConfiguration supportGlobal technical assistance