Years ago, sodium hypochlorite was used to chlorinate pools. It is basic, pH greater than 7. And I think ordinary hydrochloric acid was used to drop the pH back to 7. I don't know if these are still used. Sodium Hypochlorite ([math]NaClO[/math]) was used to chlorinate pools. If you want to lower the pH, try adding HCl.
Because most episodes of back pain have inflammation as a contributing factor, anti-inflammatory medication such as non-steroidal anti-inflammatory drugs (NSAIDs) is often an effective pain medication treatment option.
Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly prescribed medications for the inflammation of arthritis and other body tissues, such as in tendinitis and bursitis. The also are used for minor aches and pains. Examples of NSAIDs include: aspirin,