Drop Shape Analyzer
DSA25S
Semi-automatic wettability analysis with high dosing precision
The Standard version of the DSA25 Drop Shape Analyzer measures the static or dynamic contact angle with high precision and can also be used to determine the surface free energy by carrying out measurements with several liquids. The instrument provides rapid results for the wettability of a surface, for example for checking the quality of cleaned, pretreated, or coated samples.
Applications
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Quality assurance of activation processes such as plasma treatment, flame treatment, or corona treatment
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Checking wettability of plastics, glass, ceramics, wood, paper, or metal
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Testing the effectiveness of hydrophobic coatings and other coatings
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Wetting analysis at controlled temperature
Measuring methods
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Contact angle of a drop on a solid surface
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Contact angle using a gas bubble beneath a solid surface in a liquid
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Surface free energy of a solid using contact angle data
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Surface tension using the curvature of a perfectly symmetrical drop on a circular sample pedestal
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Roll-off behavior and advancing/receding contact angle of a drop on a tilted surface
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Contact angle at an immersed, cylindrical sample, usually a fiber
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Carrying out a measurement up to 20 consecutive times and displaying the results together
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Measuring the recently receded contact angle to characterize dewetting behavior
Measuring results
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Static contact angle
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Advancing and receding contact angle
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Contact angle using a bubble in a liquid
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Surface free energy (SFE) according to the following models: Owens-Wendt-Rabel-Kaelble (OWRK), Fowkes, Wu, Zisman, Equation of State
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Temperature
Controlled drop dosing for static and dynamic contact angles
With the DSA25S, dosing is carried out under software control to ensure repeatable conditions and user-independent results, which is vital for quality control. Precise measurements of the advancing and receding angle run smoothly thanks to the adjustable dosing dynamics. This measuring mode leads to a statistically significant mean value for the measured sample position.
Reliable drop shape analysis thanks to high imaging quality
The DSA25S 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. Combined with the intelligent image evaluation algorithm of the ADVANCE software, drop shape analysis with the instrument provides exact results.
Software procedures for accurate time control
The ADVANCE software can automatically start the measurement process immediately after dosing, thus enabling raw data to be recorded without losing any time. This is particularely important for samples that show a time-dependent wetting behavior.
Liquid Needle dosing
Surface free energy in seconds
With the Liquid Needle, the contact angle measurement technology is perfectly prepared for quality assurance as well as R&D. Learn more about the ideas that enable the Liquid Needle to combine speed with scientific excellence.
YOUR INSTRUMENT'S BRAIN
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Intuitive software with a workflow-oriented user interface
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Swift and repeatable analyses thanks to measurement templates and powerful automation functions
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Superior algorithms for image analyses provide for precise results even with difficult images
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A wide range of evaluation methods makes ADVANCE a reliable scientific tool
Technical Services for your instrument
Learn how we support you from day one and help you make the best use of your instrument with the longest service life possible.
Set Up and Installation
Don’t lose time and let measuring be the first thing you do with your instrument.
Training
Start your analyses with solid know-how and refresh and deepen it during your instrument’s life cycle.
Maintenance and Repair
Expect your instrument to be a reliable long-term employee.
