正确认识水的PH值 正确认识水的PH值What is pH in drinking water?
The pH level of your drinking water reflects how acidic it is. pH stands for “potential
hydrogen,” referring to the amount of hydrogen mixed with the water. pH is measured
on a scale that runs from 0-14. Seven is neutral, indicating there is no acid or alkal…… http://www.samsco.com.cn/info/169356.htm