SC Swimming Pool Practice Questions - South Carolina Swimming Pool Contractor Examination Exam

Total alkalinity is maintained in pool water primarily because it does which of the following?

Replaces the need for a free-chlorine residual Buffers pH so the reading does not swing wildly when acid or base is added Removes combined chlorine without breakpoint treatment Sterilizes the filter media

Correct Answer:

Buffers pH so the reading does not swing wildly when acid or base is added

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