Bubble Pressure Tensiometer BP100
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Data Accessories Info-Booklet
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Printing – bonding – spraying – cleaning:
processes such as these require surfactants that are already effective in fractions of a second – and an instrument that can record their effectiveness. The Bubble Pressure Tensiometer BP100 determines the dynamic surface tension as a function of the surface age. Thus the instrument provides information about wetting and drop formation in rapid processes.
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Measurement of the dynamic surface tension at constant or variable surface age |
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Wide range of surface age: 5 ms (high dynamic) up to 100 s (almost static) |
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Fully automatic measuring process by software controlled immersion of the capillary |
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Determination of the adsorption and diffusion coefficient |
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Integrated compressor - no compressed air supply necessary |
| Bubble Pressure Measurement with the BP100 A software-controlled flow of air emerging from a capillary produces air bubbles in the sample. A high-precision pressure sensor determines the maximum pressure during bubble formation, from which the surface tension is calculated. Thanks to its built-in compressor the instrument does not need an external compressed air connection. Thermostatted measurements are possible without any problems. Scans with an almost unlimited resolution over a wide range of surface ages are controlled automatically by the LabDesk software. In addition to the time-dependent surface tension, the measurement also supplies the equilibrium value according to Hua & Rosen. Diffusion and adsorption coefficients can be calculated from surfactant concentration series – these are important parameters where the mobility of surfactants is concerned. Measurements at constant bubble ages allow further insights, e.g. for concentration or temperature comparisons. |
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| After a minimal preparation period the measurement is carried out fully automatically up to data output in the form of a plot. With a mouse-click measuring parameters, results and evaluations appear in a comprehensive report. Thanks to the LabDesk™ software platform for all KRÜSS tensiometers data from other instruments can be included. | ||||
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Surface-active agent development |
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Optimization of spraying processes |
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Development of detergents and cleansing agents |
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Optimization of coating and printing processes |
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Electroplating bath concentration control |
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Measuring range - SFT (1) - Temperature |
10 - 100 mN/m -10 to 100 °C |
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Resolution - SFT - Temperature |
± 0.01 mN/m ± 0.01 ° |
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Surface age (1) | 5 ms - 100 s |
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Interfaces | USB, RS232C |
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Power consumption | max. 30 W |
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Power supply | 100 – 240 V AC; 47 – 63 Hz |
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Weight | 15 kg |
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Dimensions | 300 x 540 x 320 mm (WxHxL) |
| (1) : depending on capillary and liquid |
Measurement of surface tension at constant surface age
Measurement of surface tension at any surface ages from 5 to 100,000 ms
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Various thermostats |
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Capillaries made of glass or PTFE |
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Coating Kit to renew the hydrophobicity of the glass capillaries |
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Thermostat vessel with built-in magnetic stirrer |
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