Since 1961

First in Contact Angle

Since 1961, ramé-hart has led the field of contact angle goniometry as the original company to offer a lab-grade contact angle goniometer.

Built on the pioneering Zisman design, our instruments continue that legacy with precision-engineered systems for modern surface science.

Every instrument is a turn-key system, with a dedicated PC, pre-installed software, and the hardware, cables, and accessories needed to start researching immediately.

Thousands of our customers trust our instruments and accessories to measure surface properties such as contact angle, surface tension, surface energy, interfacial tension, and interfacial rheology across a wide range of applications.

Accuracy and Repeatability Our robust optical bench, high-resolution camera, and DROPimage software combine for a system that delivers measurements you can count on
Ease of Use Our instruments, accessories, and software along with clear guides and support ensure an ideal user experience
Flexibility We offer instruments and accessories for a variety of applications and budgets
Reliability Our products are built to last for decades

Discover Our Products

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Compare our instruments here or learn more on the product page.

Technical Resources

Build a stronger foundation in surface science

Explore our technical articles and resources to learn more about the physics and science behind contact angle, surface tension, and more!

Contact Angle

Learn how contact angle is measured, what it reveals about wetting, and how static, dynamic, and tilting studies relate to real surfaces.

Explore Contact Angle

Surface Tension

Review the basics of surface and interfacial tension, pendant-drop methods, and why these measurements matter in coatings, fluids, and interfaces.

Explore Surface Tension

Glossary

Browse definitions for the terms used across our instruments, accessories, and software, from hysteresis, roughness, and surface energy to Young-Laplace analysis.

Open the Glossary

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Use our quote request form to receive pricing, lead times, and information on our instruments and accessories. For more information and technical support, contact us.

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We make custom instruments and accessories too! For pictures of some of our past projects, look here. Contact us for more information or a quote for a custom item.

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