The ampoules offer a broad testing range, made possible by manipulating 4-aminoantipyrine chemistry. Each ampoule contains a unit dose of liquid reagent sealed under a vacuum.
To perform a test, the user snaps off the tip of a ampoule below the surface of the sample. When the tip is broken, the sample is automatically drawn into the ampoule, where it reacts with potassium ferricyanide under alkaline conditions and forms a red color.
The ampoule is then inserted into an instrument, and the results are displayed in a parts-per-million (ppm) phenol. Total analysis time is two minutes, and testing range is 0-16 ppm with a method detection limit (MDL) of 0.5 ppm.
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