From one-click wettability measurement to analysis of solid-liquid adhesion
In its Expert configuration, the Drop Shape Analyzer – DSA25 is designed for determining the wettability of solids my means of the contact angle as well as the surface tension of liquids such as coating substances or adhesives. Thanks to the combination of speed and versatile evaluation options, the analyses give quick feedback to pretreatment steps in quality control but also allow assessing the resulting adhesion.
Quick and versatile dosing for surface free energy and surface tension
The interaction between two software-controlled dosing units is the main advantage of the DSA25E. 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
The DSA25E features a high-resolution camera and a quality zoom lens for accurate display of the drop with optimum size. The high image quality that this achieves leads to a precisely measured contact angle or SFT. Combined with the intelligent image evaluation algorithm of the ADVANCE software, drop shape analysis with the instrument provides exact results.
Maximum repeatability and comprehensive adhesion analysis
The ADVANCE software supports the Liquid Needle in order to carry out automated SFE measurements within a second. The easy-to-create automation programs can also be used to design a standard procedure for sample analysis to maximize repeatability of measurements. Optional software tools for data analysis combine SFE and SFT data in order to assess the adhesion and calculate other scientific parameters of the solid/liquid contact.
Features
- Liquid Needle dosing unit; i.e. a software-controlled unit for ultrafast dispensing of two drops in parallel
- Additional software-controlled syringe dosing unit for one further liquid
- Manual lift table (z-axis)
- Zoom lens
- Camera with 1200 × 800 px at 200 fps to 90 × 60 px at 2000 fps resolution
- Very bright, homgenous LED illumination
- Software for measuring contact angle, surface free energy of solids, and surface tension of liquids
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