Kruss Ross Miles Analyser (RMFA) for electronic foam height measurement

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The Ross Miles Analyser (RMFA), from Kruss, integrates the standardised vessels according to ASTM D 1173 in a measuring device for electronic foam height measurement.

An LED bar and a sensor bar are fitted along the intake vessel, which allows the foam height to be detected based on the difference in brightness at the foam-air boundary. The electronic height detection is said to ensure improved repeatability of the measurement and achieves a resolution of 0.4 mm.

The initial foam height measurement does not have to be manually coordinated with the discharge of the reservoir solution. Instead, it corresponds to the electronically detected time at which the maximum foam height is registered. The other measurement times are also adhered to exactly.

As well as the foam height, the instrument also records the height of the liquid. In this way, the raw data documents whether the filling level specified in the norm has been accurately maintained.

Electronic data measurement is said to result in improved reproducibility and saved time, as the measurement no longer has to be followed live. Users therefore gain 5 min with every foam analysis, which they can use to prepare the next surfactant solution, for example.