Designed to test the alkalinity (pH) of water — pour 1–2 ounces of water in a shot glass, add several drops, and the water will change color to instantly show the pH.
Includes a 10 ml reagent dropper bottle and a pH-chart on card for color-comparison.
According to Cerra Water, standard litmus strips or paper-based pH/alkalinity testers may give incorrect readings for their filtered water — only these drops are designed for accurate pH testing of Cerra-treated water.
Not for consumption: reagent is for testing water only, do not drink or ingest.

If you like — I can also give you the exact text from their website (copy/paste) formatted cleanly so you can use or translate it easily.