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DROP VOLUME TENSIOMETER – DVT50

DROP VOLUME TENSIOMETER – DVT50
2Pages

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Drop Volume Tensiometer Analysis of emulsions under dynamic conditions Surfactants as emulsifiers reduce the interfacial tension between liquids which otherwise do not easily mix. As this takes a certain time, the effect of an emulsifier depends on the mixing dynamics. With the Drop Volume Tensiometer – DVT50, you can measure the speed with which emulsifiers act at the interface. The wide speed range of the analysis enables the dynamic mixing behavior as well as the stability of an emulsion to be determined. The analyses help you to precisely optimize and dose emulsifiers and to evaluate phase interactions at different speeds. Measuring methods and options ■ Development of emulsifiers in the pharmaceutical and ■ Dynamic interfacial tension using rising drops of the ■ Emulsion stability in food production ■ Emulsion formation and demulsification in enhanced ■ Dynamic interfacial tension using descending drops of the cosmetics industry ■ Mobilization of oily dirt during cleaning ■ Testing the aging status of insulating oils as specified in IEC 62961:2018 lighter liquid heavier liquid ■ Dynamic surface tension using falling drops ■ Temperature control from -10 to 90 °C, temperature measurement w

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How the drop volume method of the DVT50 works In the drop volume method, a liquid is introduced into a bulk phase through a capillary. As a result of the interfacial tension, the drop tries to keep the interface with the bulk phase as small as possible. As a new interface comes into being when the drop detaches from the capillary outlet, it is necessary to overcome the corresponding interfacial tension. The drop does not detach until the lifting force or weight compensates the interfacial tension. This means that, knowing the density difference between the phases, the interfacial tension...

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DROP VOLUME TENSIOMETER – DVT50 2Pages

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DROP VOLUME TENSIOMETER – DVT50
2Pages