Theta Knowledge base
– Attension, Biolin –
Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method
This application note describes the measurement of interfacial tension between oil and water under non- equilibrium conditions by using the ring method according to the ASTM standard.
– Attension –

Contact angle – What is it and how do you measure it?
Contact angle, θ (theta), is a quantitative measure of wetting of a solid by a liquid. The behavior of single drop on a surface tells you a lot about the…
– Attension –

The Importance of Contact Angle in Industry
Get examples of how contact angle measurements are utilized in different industries.
Attension® Theta Optical Tensiometers
Tilting Dynamic Contact Angle with the Attension® Tilting Cradle


Product Overview
The Attension Tilting Cradle allows software automated measurement of the dynamic advancing and receding angles as the droplet rolls on a tilted surface. Tilting options range from 0 to 90° with a resolution of 0.1°, giving a precise determination of a droplet’s roll-off angle.
Product Features:
- Range of motion from 0° to 90° degrees, with resolution of 0.1°
- Integration with OneAttension software to streamline data collection for dynamic contact angle research