pH and ORP

摘要

The term "pH" is used to express the degree of acidity or alkalinity of a solution although many different ions may be formed in solution those that estalish whether the solution is acid or alkaline are the hydrogen (H~+) and the hydroxyl(OH) ions, respectively. When the hydrogen ions exceed the hydroxyl ions in number, the solution is acid. When they Are equal, the solution is neutral. Alkalinity (or basicity) denotes denotes that the hydroxyl ions exceed The hydrogen ions. Acids and alkalis very in the degree to which they form ions in solution.