
Profile Analysis Tensiometers
Advanced instruments for surface and interfacial characterization.
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Profile Analysis Tensiometer
The PAT-1P is a highly compact profile analysis tensiometer for precise surface and interfacial tension measurements. Powered entirely via USB and operated manually, it provides reliable characterization of liquids and contact angle measurements within an intuitive laboratory platform.

USB
Powered only
Manual
Instrument control
Compact
Laboratory footprint
The PAT-1P platform
The PAT-1P delivers precise surface and interfacial tension measurements within a compact and portable laboratory instrument. Its manual operation and USB-powered design make it an excellent solution for research laboratories, education and routine measurements.
Based on profile analysis of pendent and sessile drops as well as buoyant and captive bubbles, the PAT-1P provides reliable characterization of liquids and solid surfaces with an intuitive experimental workflow.
Capabilities
Discover the measurement capabilities and integrated technologies of the PAT-1P.

Measure surface and interfacial tension using precise pendent drop and buoyant bubble analysis across a wide range of liquid systems.
Characterize wettability and surface free energy using the sessile drop method with precise optical contour analysis.
The PAT-1P offers intuitive manual x/y/z positioning and manual drop formation, providing maximum flexibility for education and routine laboratory experiments.
Powered entirely via USB without an external power supply, the PAT-1P combines portability with professional measurement performance.
Integrated software provides real-time image acquisition, automatic profile fitting and precise evaluation of surface tension, contact angle and interfacial properties.
Performance
The PAT-2S combines high-resolution imaging, precise mechanics and advanced analysis software to deliver reliable measurement data for demanding interface research.
10–2000mN/m
Reliable surface and interfacial tension measurements.
5°–175°
Precise sessile-drop contact angle analysis.
USB
No external power supply required.
25 fps
Reliable optical acquisition for routine measurements.
Values may depend on configuration, measurement mode and optional modules.
Measurement principle
The PAT-1P analyzes the profile of pendent and sessile drops as well as buoyant and captive bubbles to determine surface and interfacial properties. Advanced contour detection and Young-Laplace analysis provide accurate and reproducible results for routine laboratory work, education and scientific research.

Analysis method
Young-Laplace fitting
Measurement objects
Drops & bubbles
Applications
Research & education
Optional accessories
The PAT-1P can be extended with selected accessories and optional modules to support additional measurement methods and laboratory workflows.
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Optional module
Upgrade the PAT-1P with automatic drop volume and area control for improved reproducibility and advanced experiments.
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Optional module
Extend the PAT-1P for precise sessile drop contact angle and surface free energy measurements.
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Accessory
A selection of capillaries for different liquids and specialized measurement applications.
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Accessory
Precision glass syringes for accurate manual drop and bubble generation.
Learn morePAT-1P Configurator
Customize the PAT-1P with the measurement accessories and optional modules that best match your laboratory workflow. Configure your system and request a tailored quotation in just a few steps.

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Automatic Dosing
Optional module

Contact Angle
Optional module

Capillaries
Accessories

Glass Syringes
Accessories

Power Supply
Standard setup
Modular system
Select modules, options and accessories individually.
Applications
The PAT-1P supports a broad range of surface science applications, providing reliable interface characterization for education, academic research and industrial laboratories.
Scientific publications
Thousands
Publications and scientific references related to interface characterization.
Explore peer-reviewed research related to profile analysis tensiometry, wetting, contact angle measurements, surface free energy and fundamental interface characterization.
Verified SINTERFACE instrument use will be clearly distinguished from recommended scientific literature.
Technical information
Explore the measurement capabilities, hardware configuration and technical specifications of the PAT-1P.
Surface and interfacial tension
Contact angle
Surface free energy
Pendent and sessile drop analysis
Buoyant and captive bubble analysis
Manual drop volume control
Automatic drop volume and area control with optional dosing module
Dilational elasticity with optional equipment
Drop and bubble oscillations from 0.001 to 1 Hz with optional equipment
Elasticity & Viscosity
Compact base platform
Manual x/y/z-axis
Manual syringe for drop and bubble formation
Thermostated jacket for an external circulation bath
USB industrial camera
LED illumination with continuously adjustable intensity
USB-powered operation without an external power supply
Automated image acquisition and fitting
Real-time calculation of surface and interfacial tension
Contact angle analysis
Online evaluation of measurement data
Transient relaxation experiments
Fourier analysis of relaxation measurements
Semi-automatic focusing procedures
Windows 7, 8, 8.1, 10 and 11 support
Free software updates for one year after purchase
Additional capillaries on request
Automatic dosing module
Contact angle module
Precision syringes
Specifications may vary depending on configuration, software version and optional modules.
Downloads
Access product information, technical documentation and supporting materials for the PAT-1P.
Overview of measurement capabilities, technical specifications and available options.
Explore the PAT-1P, measurement methods and available configurations.
Additional manuals and software downloads are available through the SINTERFACE customer portal.
Visit download centerPAT-1P
Talk to our specialists about your application, measurement requirements and the right PAT-1P configuration for your laboratory, teaching environment or research workflow.