Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Surface tension
Patent
1992-08-18
1993-06-15
Goldstein, Herbert
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Surface tension
G01N 1302
Patent
active
052188418
ABSTRACT:
Apparatus and methods for determining the liquid/liquid interfacial tension between immiscible liquids wherein a first liquid is introduced into a second liquid at a constant rate of flow sufficient to produce successive, uniform size drops which ascend or descend depending upon whether the first liquid has a lower or higher density than that of the second liquid. The apparatus and methods are particularly useful in evaluating the effectiveness of a surfactant and the dynamics of interfacial reduction. In practice, the first liquid is discharged into the second liquid through a nozzle having an outlet of very low surface area. The time required to produce a selected number of drops is inversely proportional to the ability of the surfactant to reduce interfacial tension between the two liquids.
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patent: 4697451 (1987-10-01), Matteson
IBM Technical Bulletin vol. 22 No. 5 (Oct. 1979) pp. 2082-2083 Titcomb, S. C. "Instrument for Measuring Dynamic Surface Tension".
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Brochure by Lauda regarding Tropfenvolumen-Tensiometer TVT 1 (Translation of Three Paragraphs marked by an Asterisk) (May 1988).
Brochure by Brinkmann, regarding Lauda Tensiometers for Science Quality Surface Measurements (Aug. 1987).
Goldstein Herbert
Mah Raymond Y.
The Dow Chemical Company
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