Pool Water Chemistry
What Is Combined Chlorine?
Combined chlorine is the portion of a total chlorine test result that is not free chlorine.
Understanding the Concept
Use matching units and compatible test methods when subtracting free chlorine from total chlorine. Small differences can reflect test uncertainty.
Common Misunderstanding
This entry explains a measurement. Chloramines explains the compounds associated with combined chlorine and pool odors.
Related terms
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