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Product Code L2004A1
Price $2,500 ex. VAT

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Rapid contact angle and surface tension measurements with easy, accurate analysis

Optimise inks and coatings efficiently with HD recording and intuitive PC software


The Ossila Contact Angle Goniometer provides a fast, reliable, and easy method to measure contact angles and surface tensions of liquid droplets. With its low price, compact size, and intuitive PC software - the barrier-to-entry is lowered, enabling more researchers than before to perform these useful and versatile measurements.

Covered by our no-hassle two year warranty and eligible for free worldwide shipping.

Two-Year Warranty

Two-Year Warranty

Covered by the Ossila Warranty

Compact Source Measure Unit

Free Software Update

Keeping your software up to date

Compact

Compact

Total bench area of 10 cm x 30 cm

Easy to use

Easy to use

A simple and intuitive interface

Contact Angle Goniometer Product Overview

Key Features

Affordable

Affordable

Emerging camera technologies have allowed high-resolution images to be captured for much lower material costs. This means we can reduce the price of contact angle and surface tension measurements, without compromising on quality.

Simple to Use

Simple to Use

The system comes complete with PC software that provides a simple and intuitive interface for contact angle and surface tension measurements. We also provide user guides and videos to help you get the most out of your experiments.

Compact Size

Compact Size

The small footprint of the system lets you perform measurements in labs even when space is lacking. With a total bench area of 10 cm x 30 cm, you won't need to devote a whole desk to a single piece of equipment.

Easier Ink Optimisation

Easier Ink Optimisation

A low price and small size makes it possible for labs to have multiple systems. This enables constant access to contact angle and surface tension measurements, without needing to wait in line for a colleague to finish using it. The continuous feedback you gain from in-line measurements will speed up your ink formulation process.

High-Resolution Video

High-Resolution Video

Take quality videos of your droplets using the high-resolution camera and a specially selected imaging lens. Watch and edit your videos and images however you like by exporting them as .avi and .png files.

Rapid Image Capture

Rapid Image Capture

The high frame rate of the system allows you to study the wetting process in detail, and gain increased insight into film formation.

Testimonials


I use a Contact Angle Goniometer and Spin Coater from Ossila, the best tools I have ever used for the application of Perovskite solar cells. I plan to order more devices from the same brand.

Ashique Kotta, Jeonbuk National University

Core Components

Contact angle goniometer camera

High-Resolution camera

A high-resolution 1920 x 1080 camera captures up to 30 frames per second, which allows for in-depth analysis in the software. The manual focusing lens means that you have complete control over the sharpness of the image, simply twist the camera lens until your sample is in focus.

If file size is a concern, the software allows you to set a lower resolution or frame rate in order to save space on your hard drive.

Contact angle goniometer light

Monochromatic light source

The powerful (mains powered) monochromatic backlight helps the software to accurately detect the edges of the droplet using a Canny edge detection algorithm.

The bright, uniform rectangular panel creates a larger change in pixel lightness than would otherwise occur, which ensures that a sharp edge can be found. This helps make contact angle and surface tension measurements quick, accurate, and reliable.

Contact angle goniometer light

Adjustable sample stage

The adjustable sample stage makes it possible to obtain a level surface and prevent the droplet from moving during deposition. The stage can be lowered and raised without affecting the level, so it is easy to add or remove substrates between measurements and then place the platform as close to the needle as possible before starting the recording.

Should you wish to do so, the fine level of adjustment makes it possible to set a slight tilt towards the camera. This can help to align the baseline.

Syringe Clamping Mechanism

Syringe clamping mechanism

A versatile and adaptable clamp system is included, and can be used to secure a wide range of droplet dispensing equipment.

Included with the Ossila Contact Angle Goniometer system is a 25µl glass syringe with a removable blunt tip needle, which is ideal for dispensing droplets for both contact angle and surface tension measurements.

Contact angle goniometer

Intuitive PC software

The intuitive contact angle software lets you record video and perform both contact angle and surface tension measurements. The software performs edge detection on the video and uses an appropriate fitting technique to calculate the properties of the droplet, making it quick and easy to take contact angle and surface tension measurements.

The Ossila Contact Angle software is included on the supplied USB memory stick, and the latest version is always available to download for free from our website.

Contact Angle Goniometer Gallery


Contact Angle Goniometer
Contact Angle Goniometer Drop
Contact Angle Goniometer Camera
Contact Angle Goniometer in use
Contact Angle Goniometer droplet

Getting Started with the Ossila Contact Angle Goniometer

Video Guides

Resources and Support

Contact Angle: A Guide to Theory and Measurement Contact Angle: A Guide to Theory and Measurement

This guide will explain what a contact angle is and how it is measured. It will also show you how the Ossila Contact Angle Goniometer works and how to get the best measurement results.

Read more...
A Guide to Surface Energy A Guide to Surface Energy

Surface free energy is a measure of the excess energy present at the surface of a material, in comparison to at its bulk. It can be used to describe wetting and adhesion between materials.

Read more...
Contact Angle Measurements of Surface Wetting Contact Angle Measurements of Surface Wetting

Surface wetting occurs when a droplet spreads out over a surface, such that its contact angle is below 90°. When the droplet spreads out completely, this angle will be 0°, and 'complete wetting' will have occurred.

Read more...
Contact Angle Measurements on Uneven Surfaces Contact Angle Measurements on Uneven Surfaces

In this guide we will use the Ossila Contact Angle software to measure a droplet on an uneven surface.

Read more...
Ossila Contact Angle Goniometer User Manual Ossila Contact Angle Goniometer User Manual

The Ossila Contact Angle Goniometer provides a fast, reliable, and easy method to measure the contact angle or surface tension of a droplet.

Read more...
Software and Drivers Software and Drivers

The latest software and drivers including our cyclic voltammetry software for the Ossila Potentiostat and more.

Read more...

Contact Angle Goniometer

Measurement Accuracy ±1°
Measurement Range 5° – 180°
Overall Product Dimensions (W x H x D) 95 mm x 165 mm x 320 mm (3.74" x 6.50" x 12.60")
Stage Area 50 mm x 50 mm (1.97" x 1.97")
Maximum Sample Thickness 20 mm (0.79")
Maximum Camera Resolution 1920 x 1080

Syringe Specifications

Syringe Volume 25 µl
Needle Diameter 0.47 mm (0.019")
Needle Length 51 mm (2.01")
Tip Shape Blunt

The Contact Angle Goniometer comes complete with user-friendly measurement software. This software has been designed to be as intuitive as possible, but we also provide guides on how to use it most effectively. The software has two main interactive sections: recording and analysis. The analysis section allows the user to measure either the contact angle or surface tension of a droplet.

contact angle and surface tension measurement technique
Contact Angle and Surface Tension Measurement Techniques

Recording

Capture high-resolution videos in the recording section of the software. The videos will automatically be saved to the destination of your choosing and are saved in .avi file format, which means you can watch them in any common video player or edit them in a video editor. When loaded into the contact angle software, the videos will appear as a series of images which can be analysed individually.

Ossila Contact Angle software, capture screen
Ossila Contact Angle software, capture screen

Analysis

Measure contact angle and surface tension of your recorded droplets in the analysis section of the software. The software performs an edge detection algorithm on the droplet, then uses an appropriate fitting technique to calculate its properties.

Contact Angle

For droplets with contact angles above 10°, a polynomial curve is fitted to the droplet edge. Where the curve crosses the baseline, its tangent is used to determine the contact angle. If a droplet is below 10°, then a circle fit is used for contact angle measurements instead.

Surface Tension

The software can also perform optical tensiometry measurements on droplets suspended from a needle tip. A series of droplet models are created using the droplet radius and liquid density. The models are compared with the detected edge and the closest match is used to determine the surface tension of the liquid.

Ossila Contact Angle software, analysis screen
Ossila Contact Angle software, analysis screen

Software Requirements

Operating System Windows 10 (32-bit or 64-bit)
CPU Quad Core 2.5 GHz
RAM 2 GB
Available Hard Drive Space 185 MB
Monitor Resolution 1920 x 1080
Connectivity USB 2.0

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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