pH, or potential of hydrogen, is a measure of the activity of hydrogen ions in a solution, and therefore its acidity. The pH scale typically ranges from 0 (most acidic) to 14 (most basic, or alkaline), although some substances may have pH less than 0 or greater than 14. A pH of 7 indicates neutrality, such as pure water. In the most ideal state the human body should maintain a pH level of 7.34 ~ 7.45.

"From an evolutionary perspective, being slightly alkaline from a low-acid, high alkaline diet is the natural and optimal state of humans." American Journal of Clinical Nutrition, 2002, Vol. 76.

Some Common pH Values* Substance pH Acid mine runoff -3.6 – 1.0 Battery acid -0.5 Gastric acid 1.5 – 2.0 Lemon juice 2.4 Cola 2.5 Vinegar 2.9 Orange or apple juice 3.5 Beer 4.5 Acid Rain <5.0 Coffee 5.0 Tea or healthy skin 5.5 Milk 6.5 Pure water 7.0 Healthy human saliva 6.5 – 7.4 Blood 7.34 – 7.45 Sea water 8.0 Hand soap 9.0 – 10.0 Household ammonia 11.5 Bleach 12.5 Household lye 13.5 *Information obtained from www.wikipedia.com

Click here for suggested usage and applications of various pH level water.