1. 界面科学測器の協和界面科学
  2. Kyowa Interface Science
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  4. Surface Tensiometer

Surface Tensiometer

DY-300

Accurate standard Tensiometer
for use in quality assurance

DY-500 / DY-700

Accurate and high-versatile
Tensiometers for use in
R&D and quality assurance

BP-D5

Bubble Pressure Tensiometer
for dynamic surface tension

Measurement of the surface tension of liquids

Wilhelmy Plate Method

Wilhelmy Plate Method

The force of the liquid pulling on the
plate is measured by a balance system

Du Noüy Ring Method

Du Noüy Ring Method

The force of the liquid pulling on the
ring is measured by a balance system

Pendant Drop Methods

Pendant Drop Methods

The image of a droplet, which is suspended from a needle,
is captured by a digital camera and analyzed by a software

Bubble Pressure Method

Bubble Pressure Method

The maximum internal pressure of an air bubble formed
in a probe, which is immersed in a liquid, is determined

Dynamic Surface Tension

Dynamic Surface Tension

Surfactants have the ability to lower surface or interfacial tensions over time with the molecules being absorbed to the newly created surface or interface. During the time span from a newly created surface until an equilibrium value of surface tension is reached, the Dynamic Surface Tension can be measured. While at equilibrium state of the liquid the Static Surface Tension can be measured. Detergents and solutions for coating purposes are being used in processes where new surfaces or interfaces are constantly being created, thus the determination of the Dynamic Surface Tension is of high importance.

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