DynoTester+ Bubble Pressure Tensiometer

The robust and reliable DynoTester+ is the entry level handheld bubble tensiometer for process monitoring and quality control. Fast becoming the first choice for those looking for simple quality control of inkjet inks and monitoring the surfactant concentration in electroplating baths.

The DynoTester+ bubble tensiometer measures surface tension and surfactant concentration easily & quickly.  The mobile hand held instrument can be used directly on the production line or in the laboratory, it houses a display window which directly shows the user the measurement results and will alert the user if defined limit values are exceeded.

Measurement principle

Like all SITA Tensiometers, the DynoTester+ is based on the bubble pressure method for measuring the dynamic surface tension of liquids.

Measurements are taken of the air pressure inside a capillary tube as air is bubbled through it whilst it is immersed in a liquid sample.  As the pressure increases in the capillary tube bubbles are eventually pushed out into the liquid sample, the maximum pressure is achieved when the bubble shape is hemispherical, after which the bubble quickly grows and leaves the capillary. The force exerted on the bubble is determined by the surface tension of the liquid.

Operation

The DynoTester+ is very user friendly with little expertise needed to operate the instrument. With the Quick Start guide supplied and a bubble lifetime pre-selection, taking measurements can be done quickly and easily by the touch of a few buttons.

Measurement data can be stored in the tensiometer, transferred to a computer via USB port or printed and with the optional Lab Solution Software you can also prepare a visual presentation, evaluation and further processing of measuring data.