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Wilhelmy plate and Du Noüy ring tensiometer

Overview - Principle

TensioCAD is a tensiometer based on the principle of measuring a force against a displacement. This method, often called force tensiometry or Wilhelmy method, consists in diving a platinium plate of perimeter L in a liquid having a superficial tension σ. Platinium plate is then lift and, with the help of a balance, the capillary force F exerted on the plate is measured.

Equiped with a high precision weighing cell and coupled to a user-friendly and full software, TensioCAD is a tensiometer which helps you in numerous type of applications and measurements. TensioCAD offers 3 types of measurements: Wilhelmy plate, Du Noüy ring or Washburn method.

Specifications

Weight

0,001 ~ 120 g

Weight sensitivity

0,0001 g

Surface Tension

1 ~ 1 000 mN.m-1

Surface tension accuracy

0.01 mN.m-1

Temperature (optional)

5 ~ 60 °C

 

Applications

• Surfactants properties

• Powder wettability

• Fibers (individual or not), membranes wettability

• Capillary rising

• Ascending and receding contact angle

• Liquid density

• Sedimentation

Mesures

• Surface tension (liquid - gas)

• Interfacial tension (liquid - liquid)

• Critic Micellar Concentration

• Contact angle (liquid - solid)

• Powder wettability

• Density

• Sedimentation