METHOD AND DEVICE FOR EXAMINING A SURFACE-ACTIVE SUBSTANCE

摘要

The invention relates to a method and a device for examining the properties, especially physical properties, of a surface-active substance. A fluid is introduced in the form of a test volume into another fluid which cannot be mixed therewith, whereby at least one boundary layer is formed in a partial area of a surface of the test volume between the first fluid and the second fluid. The test volume is embodied in an axially symmetric manner around a given defining axis, whereby the boundary layer is formed in such a way that it is axially symmetrical in relation to the given defining axis. The surfac e- active substance is spread over the boundary layer in order to form a surfac e film in the region of the boundary layer with the surface-active substance. The surface film can then be examined microscopically.