Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Vapor pressure
Patent
1981-03-23
1983-07-05
Ruehl, Charles A.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Vapor pressure
250573, G01N 1302
Patent
active
043911293
ABSTRACT:
An apparatus and method are described for measuring physical characteristics of a fluid, by placing a drop (16) of the fluid in a bath (14) of a second fluid and passing acoustic waves through the bath. The applied frequency of the acoustic waves is varied, to determine the precise value of a frequency at which the drop undergoes resonant oscillations. The resonant frequency indicates the interfacial tension of the drop (16) in the bath (14), and the interfacial tension can indicate physical properties of the fluid in the drop.
REFERENCES:
patent: 3864044 (1975-02-01), Lyshkow
patent: 4218921 (1980-08-01), Oran et al.
patent: 4260258 (1981-04-01), Rose et al.
Lucassen, J., The Shape of an Oil Droplet in an Aqueous Solution with Density Gradient, in. Journ. of Coll. & Inter. Sci., vol. 70, No. 2, pp. 355-365, Jun. 15, 1979.
Fink, T. R. et al., Multicell Spinning Drop Interfacial Tensiometer, in. Rev. Sci. Instr., vol. 49, No. 2, pp. 188-193, Feb. 1978.
Trinh Eugene
Wang Taylor G.
Jones Thomas H.
Manning John R.
McCaul Paul F.
Roskos Joseph W.
Ruehl Charles A.
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