Slightly alkaline intercellular fluids hold 10 to 20 times as much oxygen as slightly acidic intercellular fluids.

pH 7.0 is neutral; 6.0 is ten times as acid as 7.0 pH; 5.0 is 100 times as acid; 4.0 is 1,000 times as acid; 3.0 is 10,000 times as acid!