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ISO 9101:1987

Current Revision

Surface active agents -- Determination of interfacial tension -- Drop volume method

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The volume of a drop of an aqueous phase formed at the end of a vertical capillary tube is measured when it detaches from the tube in contact with the organic phase. The interfacial tension between two liquid phases is obtained by balancing the weight of the drop with the interfacial tension force supporting it and applying a correction factor. Then the interfacial tension is calculated from the volume of the falling drop, the outer capillary radius, the density difference between the two liquid phases and the acceleration due to gravity.


SDO ISO: International Organization for Standardization
Document Number ISO 9101
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 91
Publish Date Document Id Type View
Not Available ISO 9101:1987 Revision