초록 ▼

A device for monitoring the presence or absence of active surfactant or other surface active agents in a solution or flowing stream based on the formation of foam or bubbles is presented. The device detects the formation of foam with a light beam or conductivity measurement. The height or density of

A device for monitoring the presence or absence of active surfactant or other surface active agents in a solution or flowing stream based on the formation of foam or bubbles is presented. The device detects the formation of foam with a light beam or conductivity measurement. The height or density of the foam can be correlated to the concentration of the active surfactant present.

대표청구항 ▼

A method of measuring active surfactant concentration within a solution comprising: introducing a surfactant-containing solution into a container having a sidewall whereby a surface of said surfactant-containing solution is established; introducing a gas under the surface of the surfactant-containin

A method of measuring active surfactant concentration within a solution comprising: introducing a surfactant-containing solution into a container having a sidewall whereby a surface of said surfactant-containing solution is established; introducing a gas under the surface of the surfactant-containing solution with the result that a foam is generated; and, sensing height of said foam above the surface of said surfactant-containing solution by passing at least two light beams horizontally above the surfactant-containing solution into a detector, each light beam at a different vertical distance from the surface of said surfactant-containing solution, said height corresponding to active surfactant concentration, said method further characterized in that said surfactant-containing solution is introduced into said container by continuously passing said surfactant-containing solution downwards upon said sidewall in said container thereby continuously washing the sides of the container and cleaning the optical paths of said light beams.