120 Besides drinking water, Enagic's machines produce four other types of water. Enagic recommends using very acidic "sanitary water" for household disinfecting, such as sanitizing cutting boards and knives. "Beauty water" helps close facial pores after washing with it, the company says. Neutral water is intended for taking medications and making baby formula; and "strong" Kangen water, a very alkaline water, is intended for "cleansing power" in such tasks as removing toilet stains or floor stains.
, Some doctors and scientists say the companies' claims aren't backed by good high-quality studies. "Human evidence is lacking, safety profile is lacking and it's very expensive," says Catherine Ulbricht, co-founder of National Standard Research Collaboration, a Cambridge, Mass. scientist-owned group that evaluates natural therapies. "There is no basis for any health claims at all" for alkaline drinking water, adds Santa Barbara, Calif., gastroenterologist John Petrini, past president of the American Society for Gastrointestinal Endoscopy. After it is digested, food and water goes into the stomach and—no matter what pH it was when it entered—ends up leaving the stomach at a pH of about 6.8, Dr. Petrini says. And no matter what you eat, your body has effective mechanisms to keep your blood in a narrow range between 7.35 and 7.45, he adds. Chemists say it's logical that acidic or very alkaline water could be useful for cleaning, but there's no evidence that the pH of water has any specific effect on skin or pores, says Washington, D.C., dermatologist Tina Alster.
125 How does an ionizer work? A water ionizer is a small kitchen appliance that separates tap water into two separate streams - one alkaline and one acidic - through a process called electrolysis. Ionizers can either be installed on the counter next to the kitchen sink or under the counter with only a special faucet visible above the counter. Ionization breaks the bond between the oxygen and hydrogen atoms of a water molecule [H2O] and produces alkaline water full of hydroxyl ions [OH-] and and acid water full of hydrogen ions [H+]. What are pH and ORP? The pH scale measures how acidic or alkaline a substance is. It ranges from 0 to 14. A pH of 7 is neutral, a pH less than 7 is acidic, and a pH greater than 7 is
(or basic). ORP, or oxidation reduction potential, measures a substance's ability to oxidize or reduce molecules around it, or in other words, it's potential to steal or donate electrons. pH and ORP are key concepts to understand ionization and the important health benefits of alkaline ionized water. Water, the chemistry of life. Water is essential for life. No living being on planet Earth can survive without it. In fact, about 70 to 90 percent of all organic matter is composed of water. Water not only provides the medium to make life sustaining chemical reactions possible, but water itself is often an important reactant or product of these reactions. In short, the chemistry of life is water chemistry. This section provides some basic concepts that help to understand the chemistry of water and the science behind water ionization at the molecular level.