Lauda^® Maximum Bubble Pressure Tensiomenter MPT-2

The Lauda MPT-2 determines the dynamic surface tension of solutions at surface ages from a few milliseconds to several seconds, and investigates adsorption mechanisms of surfactants and surfactant mixtures in the millisecond range.

Applications

• Formulation of agricultural spray solutions for optimum aerosol production
• Development of photographic emulsions
• Control of plating bath solutions

Features

• Precisely measures bubble formation time and actual maximum bubble pressure to determine the surface life and effective surface age
• Bubble detection performed by a sensor which is separated from pressure transducer—allows the use of narrow capillaries (0.075 mm radius) needed for very short surface age determinations
• Calculates the life of the hemispheric surface or “effective age” using “critical point”, known bubble volume, and surface life of the whole bubble
• Quantitative evaluation of the measurement data

Computer Control of Each Measurement

• Entire measurement process is computer controlled using Microsoft^® Windows^®-based software
• Different measurement methods and flow rates can be selected
• A complete dynamic curve can be obtained in a few minutes or up to two hours, depending on the para-meters used for measurement
• Data output options:
  • All measurement data can be printed as graphs or tables
  • Data can be exported to other programs
  • Up to five measurement curves can be superimposed and processed simultaneously