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.
NSAID - an anti-inflammatory drug that does not contain steroids; NSAIDs inhibit the activity of both Cox-1 and Cox-2 enzymes. nonsteroidal anti-inflammatory, nonsteroidal anti-inflammatory drug. anti-inflammatory, anti-inflammatory drug - a medicine intended to reduce inflammation.