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 ANTIINFLAMMATORY DRUG OVERVIEW. Nonsteroidal antiinflammatory drugs (NSAIDs) are medications used to relieve pain and to reduce inflammation. They are some of the most commonly used medications in adults. A variety of NSAIDs are available, including at least 20 in the United States and more elsewhere.