Oscillating Drop and Bubble Analyser ODBA-1

This instrument is designed as an additional module for the PAT-1, using the video image acquisition for the determination of the drop size. If drops have a spherical shape (very small and/or low density), the measurement of the pressure P together with the radius of curvature r yields the interfacial tension.

For measurements of interfacial tensions between a liquid and a fluid, the density difference is needed. Calibration against the external and hydrostatic pressure is needed.

For drop/bubble oscillation experiments only pressure changes have to be measured along with the phase shift to the generated area oscillation.

	Features of the instrument
		drop oscillation at frequencies from 1 to 100 Hz to determine the dilational elasticity and viscosity of interfacial layers
		applicable to bubbles and drops (also immersed in a second liquid)
		easy temperature control
		measurement of interfacial tension between two liquids of same density (see also DPA- 1)
		dynamic interfacial tensions for adsorption times between 50 ms and hours

More information to be downloaded as ODBA-1-Info. (*.pdf, kB).

Datasheet download as ODBA-1-Data. (*.pdf, kB).