Free Chlorine Vs Total Chlorine Pool. To understand the differences between free, combined and total chlorine, first take a look at this simple formula: Since clean chlorinated water contains no combined chlorine, total chlorine in a sanitized pool is the same as free chlorine.
Combined chlorine is the chlorine that has already. In typical operation total chlorine can be used as if it were free chlorine because combined chlorine is usually zero. But without a separate measurement of free chlorine, it is impossible.
To understand the differences between free, combined and total chlorine, first take a look at this simple formula:
You need to know the safe level of chlorine in pool water to avoid the health risk. To make things even more confusing, there are actually three types of chlorine — total chlorine, free chlorine, and combined chlorine. Combined chlorine is the chlorine that has already. And total chlorine is the sum of the two.
