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  4. Surface Tensiometer
  5. BP-D5

BP-D5

BP-D5

BP-D5 Bubble pressure tensiometer

BP-D5

Sample chamber with jacket-type stage

BP-D5

Jacket-type stage in measuring and standby position

BP-D5

Built-in thermometer next to glass probe connection

BP-D5

Standard accessories set of glass probes, liquid vessels, probe holder, and ultrasonic cleaner

BP-D5
BP-D5
BP-D5
BP-D5
BP-D5

Display of the pressure voltage waveform

Display of the pressure voltage waveform

Extrapolation according to Hua & Rosen

Extrapolation according to Hua & Rosen
  • "One-click" fully automated operation

  • Surface tension against surface age (from 20 to 5,000ms) chart is computed and plotted automatically
  • Measurement of the dynamic surface tension at a specific surface age from 20 to 1000ms.
  • Real-time display of the bubble pressure waveform to monitor the conditions of the bubble generation
  • Extrapolation of the averaged raw data according to a method suggested by Hua & Rosen
  • The bubble generation from the capillary is made visible by a synchronized built-in stroboscopic lamp
  • Built-in jacket type stage and platinum resistance thermometer for measurements in the range of +10 to +70℃
  • Ultrasonic cleaner for cleaning of the glass probes

Hardware

  • Air tank for a surface age range from 20 to 15000ms.
  • Determination of the characteristics of surfactants, such as concentration, lifetime, and dynamic surface tension
  • Dynamic surface tension and instant wettability of inks and coating fluids
  • Determination of the absorbing rate of surfactants to control the dynamic surface tension
  • Instant forming of microdroplets with regards to aerosols and emulsifiers
  • Determination of instant foaming of detergents and fire extinguishing fluids
  BP-D5
Measuring methods Maximum bubble pressure method
Measuring range 10 to 100mN/m
Resolution 0.01mN/m
Accuracy1) 0.5mN/m
Surface age range of dynamic surface tension in a time function: 20 to 5000ms, optional: 20 to 15000ms
at a fixed surface age: 20 to 1000ms
Sample volume about 80mL
Sample viscosity range 0.5 to 10mPa・s
Sample stage operation by software-controlled pneumatic cylinder
Air supply pressure 0.4 to 0.7Mpa
External dimensions
(WxDxH)
320x315x475mm
Approximately weight 18.5kg
Electric power:
Voltage
Frequency
Power consumption

AC100-240V
50/60Hz
50W 80VA
Operating environment

temperature: +10 to +35℃, humidity: 30-80%RH (non-condensing)
positioned away from sources of electrical noise and vibration

1) Accuracy is the repeatability in terms of standard deviation based on the manufacturer’s prescribed conditions

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