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Multiple Choice

Which statement about cyanuric acid in outdoor pools is true?

Cyanuric acid acts as a stabilizer for outdoor pools, protecting chlorine from being rapidly degraded by sunlight. It binds with chlorine to form a UV-resistant form, so the sanitizer lasts longer when the pool is exposed to direct sun. That’s why the statement about reducing chlorine loss due to UV rays is the true one. It does not raise the water pH; pH is managed by other components and alkalinity, not by cyanuric acid. It is not a stand-alone sanitizer, and it does not neutralize chlorine. Keeping cyanuric acid within recommended levels helps maintain effective disinfection while preserving chlorine in sunny conditions.

Cyanuric acid acts as a stabilizer for outdoor pools, protecting chlorine from being rapidly degraded by sunlight. It binds with chlorine to form a UV-resistant form, so the sanitizer lasts longer when the pool is exposed to direct sun. That’s why the statement about reducing chlorine loss due to UV rays is the true one. It does not raise the water pH; pH is managed by other components and alkalinity, not by cyanuric acid. It is not a stand-alone sanitizer, and it does not neutralize chlorine. Keeping cyanuric acid within recommended levels helps maintain effective disinfection while preserving chlorine in sunny conditions.