Removing water from true silicic acid (H4SiO4) results in meta silicic acid (H2SiO3). Gerolsteiner Sparkling and Gerolsteiner Medium contain with 40.1 mg/l a comparatively large amount of true silicic acid. The true silicic acid content of St. Gero Health Water is 45.8 mg/l, which translates to a specified amount of 37.2 mg/l of meta silicic acid on the label.
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