/en-US/products-services/accessories /en-US/products-services/products

Drop Shape Analyzer


Analyzing wetting and material deformation at up to 2000 °C

Drop Shape Analyzer – DSAHT for wetting analysis at up to 2000 °C

The DSAHT Drop Shape Analyzer goes to the extreme when it comes to wetting and deformation analysis of melts and combustion residues. With temperatures up to 2000 °C in a various range of atmospheric conditions, the instrument analyzes melting substances and helps to understand the interactions that occur when melts come into contact with solid material. This knowledge supports you in optimizing combustion, firing, or coating processes in order to create stable end products, save energy during the process, or prolong the service life of your furnaces.


  • Measuring adhesion and wetting of metal slags in smelting plants

  • Detecting reactions between the glass and refractory bricks in glass production

  • Optimizing wetting of the carrier material by enamel coatings

  • Investigating the changes of the green body depending on temperature and time in ceramics production

Measuring methods

  • Contact angle of a drop on a solid surface

Measuring results

  • Contact angle

  • Surface tension (calculated from the curvature of a sessile drop)

  • Temperature in close vicinity to the sample

Wetting analysis using precise contact angle measurement

The DSAHT optically determines the contact angle between a liquid and a solid as a direct measure of wetting. Moreover, the surface tension of the hot liquid can be calculated from the curvature of the drop.


The instrument is equipped with a high-resolution camera, which records the sample while being heated up. With special filters that shield the light emitted by glowing materials, a clear shadow image is achieved, ensuring precise contact angle measurement.


Loading the furnace with the sample is a matter of seconds thanks to the easy handling of the sample holder. Due to the contactless nature of video analysis with no mechanical stress applied, the shape of the sample only depends on chemo-physical alterations with respect to time and temperature, which are both assigned to each camera image. The powerful image analysis of the ADVANCE software documents exactly what happens with your sample when heated up.

  • Drop Shape Analyzer – DSAHT for wetting analysis at up to 2000 °C

    The sample reaches the measuring position inside the furnace quickly and easily.

Accurate heating and versatile instrument configurations

Thanks to precise and stable target temperatures as well as accurate control of temperature ramps, highly repeatable measurements are a matter of course. Depending on the task, the setup of the instrument is optimized for analyses at different temperatures and atmospheres:


DSAHT2000 Up to 2000 °C Inert or reducing
Vacuum down to 10-3 bar
DSAHT1800 Up to 1800 °C Inert, oxidizing, or reducing Vacuum down to 10-4 bar
DSAHT1600 Up to 1600 °C Oxidizing or reducing
Vacuum down to 10-5 bar


This versatility makes it possible to simulate various industrial high temperature processes or to carry out comprehensive material research, such as metallurgical studies.


  • 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

To the top