QBZY-1 Series Surface Tensiometer

Instrument Details

Surface tension is a basic parameter to determine the liquid solubility, wettability, foamability, coatability, and permeability, etc.

Instrument main features

  • The sensor is integrated with high accuracy and high sensitivity electromagnetic technology, and any error in manual operation can be avoided by automatic measuring to enhance the data accuracy and reliability;
  • A Pt board or Pt loop can be chosen to measure the liquid surface and interface tension.
  • The Pt board can be used to measure the liquid surface tension in real time, it is practicable for measuring any sample which contains any surface activating agent or volatile matter and whose surface tension will change with time;
  • The Pt board can be used to measure the surface tension of any medium or high viscosity liquid sample;
  • Various temperature control are optional to satisfy different measuring requirements;

Instrument application range

  • Ink, printing ink, oil paint industry: analyzing the wettability in printing and coating, product research and development, quality control
  • Cleaning agent industry: analyzing the absorbing rate, property and a suitable concentration of any surface activating agent
  • Cosmetic industry: analyzing the dispersibility, stability and wettability of any emulsion or suspending agent
  • Electroplating industry: analyzing the surface tension of any electroplating solution for quality control
  • Pesticide industry: preparing any additive agent and analyzing the wettability
  • Petroleum industry and auxiliary agent industry, etc

Document parameters

Model QBZY-1 QBZY-2 QBZY-3
Measurable range 0 ~ 600 mN/m 0 ~ 400 mN/m 0 ~ 200 mN/m
Sensitivity 0.1 mN/m 0.01 mN/m 0.001 mN/m
Repeatability ±0.1 mN/m ±0.04 mN/m ±0.02 mN/m
Measuring mode Pt board method, Pt loop method, or both
Operating mode Sample disc automatic elevating, fully automatic measuring
Data display Surface / interface tension (Pt board method, data displayed directly)

Maximum force (Pt loop method, secondary conversion is necessary)

Displaying mode Wide visual angle backlight LCD, digital display
Sample constant temperature range Standard room temperature or 5℃~90℃
(optional sample constant jacket cup and constant temperature circular bath are necessary)
Measuring time Low concentration sample: 3~5 sec for Pt board method, 40~60 sec for Pt loop method
Data output interface RS232
External dimensions 400×200×430 (L×W×H, mm)
Net weight 13Kg
Power supply 220V、50HZ

*Repeatability: Use the plate Method to test the data for the standard sample distilled water

Optional: The surface tension meter cooperates with the thermostatic circulation bath to control the test sample temperature.



To understand the fundamental principles common to all types of Surface Tensiometer be sure to read our main article: What Is a Surface Tensiometer?

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