Precision Optical Tensiometers

Smart Interfacial Measurement Solutions for Wettability and Adhesion

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Model

Theta

Theta Lite


Product Image of the Attension Theta

Product Image of the Attension Theta Lite
Available Measurements
Static Contact Angle Yes Yes
Dynamic Contact Angle Automatic Manual
Surface / Interfacial tension Yes Yes
3D surface roughness Yes
Interfacial rheology Yes
Surface free energy Zisman Plot, OWRK/Extended Fowkes, van Oss Acid-Base, Wu, Neumann’s Equation of State, Schultz 1 and 2
Available Measurement Methods
Sessile drop Yes Yes
Captive bubble Yes Yes
Pendant drop Yes Yes
Reverse pendant drop Yes Yes
Meniscus Yes Yes
Dynamic contact angle Automatic Manual
Pulsating drop Yes
3D Topography Yes
High Pressure Yes
Hardware
Measuring range (°, mN/m) 0 – 180, 0.01 – 2000 0 – 180, 0.01 – 2000
Accuracy (°, mN/m) ±0.1, ±0.01 ±0.1, ±0.01
Maximum sample size (mm) Unlimited×95×180 (with stage) Unlimited×45×200 (with stage)
Maximum resolution (px) 1984×1264 1280×1024
Maximum measuring speed (fps) 3009 2068
Frame interval 0.33ms – 1000 s 0.48ms – 1000 s
Camera USB 3.0 digital camera with zoom USB 3.0 digital camera
Light source LED based background lighting LED based background lighting
Field of view (Ø, mm) 1.44 – 30 2.9 – 12
Dimensions — Basic frame (L×W×H, cm) 74×20×59 49.5×13×31
Weight — Basic frame (kg) 7.3 5
Power supply (VAC) 100 – 240 100 – 240
Frequency (Hz) 50 – 60 50 – 60
Drop Profile Fitting Method
Young-Laplace (CA, ST/IT, M)* Yes Yes
Bashforth-Adams (ST/IT)* Yes Yes
Circular (CA)* Yes Yes
Polynomial (CA, M)* Yes Yes
Software
Provided software OneAttension OneAttension
System Requirements
Recommended system requirements
  • 2 GHz processor
  • 2 GB RAM
  • 120 GB hard disk drive1
  • 1024×768 resolution
  • 1 USB2 or USB3 port, 1 x USB3 port
  • 1 additional USB2 port with 3D topography module
  • 1SSD hard disk (min. 500MB/s) needed for high speed recording with high resolution
Operating system requirements
  • Windows 7 & 8 & 10 (32 or 64 bit)
Learn more View Attension Theta View Attension Theta Lite
CA: Contact angle | ST/IT: Surface tension and Interfacial tension | M: Meniscus