Question

Difference between available chlorine and residual chlorine

Answer 1

There are three types of chlorine.

First is Free Chlorine that you usually test for in your pool water.

This chlorine is available to sanitize your pool.

Then there is the Combined Chlorine that’s been used up by the sanitation process of the water.

And finally Total Chlorine that is the sum of both free chlorine and combined chlorine.

Answer 2

Explanation:

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Available chlorine and residual chlorine are terms used to define the type of chlorine in substances such as water. Available chlorine is naturally present in the substance and is often required for several purposes. However, residual chlorine is extra and tends to be added externally.

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