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Theta flow:
Premium contact angle meter suitable for demanding surface research and quality control. Enjoy a user-friendly instrument with a high level of automation and accuracy for user-independent results. 

Specifications:

 OneAttension Features

• Autofocus keeps the picture sharp
• User-friendly interface
• Automatic baseline detection and drop shape fitting
• Seamless interplay with integrated touch screen
• Optimized image quality
• Batch contact angle mode
• Fully automatic dynamic contact angle mode with the needle method
• Monitors the measurement environment

Theta Pulsating Drop:

Optical tensiometer especially suitable for interfacial rheology with the pulsating drop method.

What you can measure:

• Interfacial dilatational rheology
  Pulsating drop method
• Surface- and interfacial tension
  Pendant drop and reverse pendant drop methods
• Static contact angle
  Sessile drop, captive bubble, and meniscus methods
• Surface free energy 
  Sessile drop, captive bubble, and meniscus methods
• Dynamic contact angle
  Dynamic contact angle, advancing and receding contact angle, contact angle hysteresis, and roll-off angle
• Roughness-corrected contact angle and 3D surface roughness 
  Fringe projection phase shifting method

Specifications:

Contact angle meter that measures the wettability on small areas effectively.

• Static contact angle  even on areas smaller than 100 µm
  Sessile drop
• Surface free energy  
• Roughness-corrected contact angle and 3D surface roughness  
• Dynamic contact angle   
• Surface- and interfacial tension  
• Interfacial dilatational rheology  

Specification:

Theta Pico is based on the high-end Theta Flow which is characterized by its high automation level, ease of use, and high-end accuracy. It can also be used with the versatile Theta Flex contact angle meter. Check out the system specifications below.

The Theta Flow is the premium contact angle meter suitable for demanding surface research and quality control.  This user-friendly instrument is part of the Theta range of optical tensiometers and brings automation to a new high and offers improved accuracy with its high-end camera, image enhancement and sensors.

On top of the features available with the Theta Flex, additional main features of the Theta Flow include:

• Heightened level of automation – Camera autofocus, automatic surface mapping, and automatically generated results, bringing  for optical tensiometers, simplifying the measurements and increasing accuracy.
• Highly accurate results – with a camera resolution at 5 MP, image enhancements with DropletPlus technology and sensors keeping track of the surrounding environment for good traceability, Theta Flow will provide . The reliable data, in turn, is a key component for user-independent measurements.
• Greater user experience – the touch display makes measurement preparation super smooth to handle. Everything from filling the liquids to changing your sample can be done easily at the instrument in seconds.

With optional motorised sample stage, motorised vertical movement and a choice of dispensing systems, Theta Flow can function in a fully automated mode, placing drops in predetermined locations on the substrate and measuring the contact angles.

• Fully automatic measurements avoids user variation and saves time.
• Select ready-made experiment recipes or create custom programs for quick and repeatable operations.
• Automatic base line detection and drop shape fitting.
• Contact angle on curved surfaces (circular or near-circular).
• Flexible and programmable frame per second rate recorded by the camera.

For a breakdown on the technical specifications of the complete Theta Flow range, please click on the Downloads tab below.  Click on the video tab also for an overview of how the instrument works.

ThetaLite measures contact angles, surface free energy and drop volume. The available drop profiles are: sessile drop, pendant drop, captive bubble, meniscus and reverse pendant drop.  The instrument is packed with smart features and is controlled with OneAttension software that has been designed for extreme user friendliness.  The software analyses your results in real time and includes a batch quality control measurement mode for efficient industrial surface quality control.

As standard the ThetaLite comes equipped with manual sample stage and one touch liquid dispenser, making it a convenient and cost-effective instrument for research, industrial processes and educational use.  Choosing the automatic disposable tip dispenser system will ensure you don’t need to worry about cleaning as droplets are created precisely using a disposable pipette tip.  The droplet volume is calculated from the real time image with advanced machine vision to ensure repeatability.  Precise automated or manual droplet deposition will keep the droplet volume the same each time and minimises any result variation and the high resolution camera will minimise any optical variation.

Designed for high accuracy the ThetaLite is the ideal entry level instrument for anyone looking for an incredibly easy to use contact angle measurement instrument.  What’s more, the system comes fully assembled and with quick start guide so you can start performing within minutes.