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

Find the model that matches your task

Compare our instruments on the instrument comparison page or learn more on the product page.

Product Update

All-New U6 Camera

ramé-hart U6 camera and machine vision lens

Sharper Imaging

The all-new U6 camera is now offered with 200, 400, and 500-series instruments! This high-resolution camera enables high-accuracy edge detection and baseline placement along with a crisp image.

Camera Resolution1920 × 1200 pixels (2.3 MP)
Maximum Camera Frame Rate2320 frames per second
Default Camera Frame Rate160 frames per second
Read more about this update in our newsletter

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, learn about the advantages of pendant-drop tensiometry and explore advanced dynamic methods.

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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Request a Quote Contact Us Compare Products Accessories

We make custom instruments and accessories too! For pictures of some of our past projects, browse our instrument, accessory, and custom project image gallery. Contact us for more information or a quote for a custom item.

Feature Update

New SpringDrop Feature

Make your workflow more repeatable

The SpringDrop kit is a new addition to our Microsyringe Fixture that enables easy and repeatable dispensing. It can easily be installed or removed depending on your application.

This feature is included with all new 200-series, 400-series, and 500-series instruments!

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