What does the term “pH mean?
The term pH is scientific shorthand for the words “potential Hydrogen” and is always spelled with a small “p” and uppercase “H”. It is a measure of the acidic or basic (alkaline) value of a solution. The pH scale goes from 0 to 14. The exact neutral point is 7, and all values lower are acidic. All values higher than 7 are basic, also sometimes referred to as alkaline in older text books. Alkalinity is a condition caused by dissolved carbonates and bicarbonates which tends to buffer a solution back to above 7, even after large amounts of acid are added.