Drop Shape Analyzer

DSA30S

The versatile instrument for semi-automatic wettability analysis

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The Standard configuration of the DSA30 Drop Shape Analyzer is designed for the semi-automatic measurement of the static and dynamic contact angle and the scientific assessment of wettability by means of the surface free energy (SFE). The instrument is well-suitable for the reliable quality assurance of surface pre-treatment processes as well as the development and optimization of wetting and coating procedures. Accessories for ultrafast one-click SFE measurement as well as wetting analysis at higher temperatures enhance the spectrum of the instrument.

Applications

Quality assurance and optimization of activation processes such as plasma treatment, flame treatment, or corona treatment before coating or bonding
Analyzing the wettability of plastics, glass, ceramics, wood, paper, or metal
Analyzing surface cleanliness
Wetting analysis at controlled temperature

Measuring methods

Contact angle of a drop on a solid surface
Contact angle using a gas bubble beneath a solid surface in a liquid
Contact angles of two drops dosed in parallel
Surface free energy of a solid using contact angle data
Roll-off behavior and advancing/receding contact angle of a drop on a tilted surface
Carrying out a measurement up to 20 consecutive times and displaying the results together

Measuring results

Static contact angle
Advancing and receding contact angle
Contact angle using a bubble in a liquid
Surface free energy according to the following models: Owens/Wendt/Rabel/Kaelble (OWRK), Fowkes, Wu, Zisman
Temperature

Controlled drop dosing and easy sample positioning

With the DSA30S, dosing is carried out under software control. Accurately adjustable drop volume and speed 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.

The DSA30S is also equipped with three manual axes for moving the sample to the required positions quickly and precisely without having to touch the sample.

Reliable drop shape analysis thanks to high imaging quality

The DSA30S 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 particularly important for samples that show a time-dependent wetting behavior.

OPTIONAL

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.

Intuitive software with a workflow-oriented user interface
Swift and repeatable analyses thanks to measurement templates and powerful automation functions
Superior algorithms for image analyses provide for precise results even with difficult images
A wide range of evaluation methods makes ADVANCE a reliable scientific tool