Wetting Test (KRUSS - DSA30)

Drop Shape Analyzer – DSA30

The DSA30 instrument is used for the precise measurements of contact angle and surface free energy (SFE) allowing wetting and adhesion studies on solid surfaces.

Tasks and applications

• Characterization of surface pre-treatment processes
• Investigation of the adhesion and stability of bonding and coating processes
• Checking the wettability of materials
• Checking surface cleanliness

Measuring methods and options

• Contact angle between a liquid and a solid
• Surface free energy from contact angles of several test liquids using all common models
• Static contact angle, advancing angle and receding angle
• Measurement of surface tension and liquid-liquid interfacial tension using the Pendant Drop method
• Measurements on inclined surfaces

Accessories

• Tilting table
• Captive bubble device
  The captive bubble method is a special arrangement for measuring the contact angle between a liquid and a solid using drop shape analysis. Instead of placing a drop on the solid as in the case of the sessile drop, a bubble of air is injected beneath a solid, the surface of which is located in the liquid.