Product Overview

The KRUSS DSA25 Drop Shape Analyser is an easy-to-use, reliable instrument for measuring contact angle. From a simple wetting test to the accurate measurement of surface free energy (SFE), the robust instrument provides flexible options for analysing wetting and adhesion on solid surfaces. Its rapid, manual sample positioning makes the DSA25 outstandingly suitable for occasional wetting measurements with changing tasks and sample types.

Surface free energy in seconds
The Liquid Needle is a novel dosing method that offers a fast and reproducible way of placing drops on solid surfaces with minimum kinetic energy using a very thin jet of liquid instead of a solid needle. The Liquid Needle dosing technology performs rapid one-click measurements of the surface free energy (SFE) based on contact angles of two liquids. The additional syringe dosing unit can be used to add data for a third liquid to consolidate the SFE result or to measure the surface tension (SFT) of a liquid.

Reliable drop shape analysis thanks to high imaging quality
A high-resolution camera combined with a high-quality zoom lens ensure an accurate determination of the drop with optimal size which leads to a precisely measured contact angle or surface tension (SFT). The optional tilting table allows the analysis of (super-) hydrophobic and self-cleaning surfaces automatically by means of the contact angle and roll-off angle.

Maximum repeatability and comprehensive adhesion analysis
The ADVANCE software supports the Liquid Needle in order to carry out automated SFE measurements within seconds. The easy-to-create automation programs can also be used to design a standard procedure for sample analysis to maximise repeatability of measurements. Optional software tools for data analysis combine SFE and SFT data in order to assess the adhesion and calculate other parameters of the solid/liquid contact.