Author Archives: Hennie de Klerk

pH and Drinking Water

A question often asked is what is the effect of water, with a pH lower than 7, on human health? Under certain conditions a reverse osmosis purifier will lower the pH of the permeate or purified water slightly. (This depends on the equilibrium relationship between CO2, HCO3, and CO3). To understand the effect of pH […]

Fluoride

(Compiled by Eugene Bezuidenhout) What is fluoride? Fluoride (F-) is the anion, the reduced form of fluorine, one of the halogens (as chlorine) on the periodic table. Inorganic compounds, such as sodium fluoride (NaF) containing fluorine are referred to as fluorides. Where is fluoride found? Fluoride is a natural mineral occurring in most water sources […]