Tensiometer PAT2P - SINTERFACE

Competence in Science and Instrumentation

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Our main expertise is the development of measuring instruments for the characterization of interfaces. One group of instruments is dedicated to measurements of dynamic surface and interfacial tensions. These are the most frequently used methods for characterizing liquid interfaces.


Very compact profile analysis tensiometer
Simple manual instrument to measure surface and interfacial tension of liquids
Contact angle measurements are available in the basic version
No power supply needed (powered by USB)
Ideal instrument for educational purposes

The principle is based on the analysis of the profile of pendent and sessile drops or buoyant and captive bubbles. PAT is well suited to determine the contact angle of liquids on solid surfaces.

Instrumental parts

- Basic platform on which all parts are safely mounted
- Manual x/y -axis
- Syringe for manual drop/bubble formation
- Thermostated jacket for external circulation bath
- USB industrial camera with fixed objectives (no frame grabber needed)
- LED lighting with continuously adjustable intensity
Measurement Features
- Surface and interfacial tension of liquids
- Contact  angle according to the sessile drop method

Main features of the software
- on-line interfacial tension/contact angle calculation
- transient relaxation experiments
- calculation of the dilation rheological parameters from relaxation measurements via Fourier analysis

Technical Specifications

Range of Surface and Interfacial tension
10 to 2000 mN/m
Range of contact angle measurement
5° to 175°
accuracy ±0.3°
manual drop/bubble formation
Measuring options
manual drop volume control
automatic drop volume/area control (optional)
pendent drop, buoyant bubble, sessile drop
surface / interfacial tension
dilational elasticity (optional
contact angle
surface free energy
drop/bubble oscillations 0.001 to 1 Hz (optional)
manual fixed objectives
Industrial CMOS-camera:
max. resolution 1280 x 960 pixels USB, optical distortion: < 0.05 %
Frame rate
up to 25 images/s
LED, manually controlled light intensity
OS Windows 7, 8, 8.1, 10 or 11
free update over 1 year after purchase
Size of device (L xW x H)
400 x 200 x 200mm (standard version)
3 kg
Power supply
Powered by USB bus
Extra accessories
additional capillaries on request
automatic dosing module
contact angle module
SINTERFACE Technologies e.K
Müggelseedamm 70
12587 Berlin

+49 (0)30 23544406
+49 (0)30 23535716

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