What Is Free Chlorine And Combined Chlorine. Water that is absolutely pure will only. The equation looks like this:
The combined chlorine (cc) level is calculated by subtracting the free chlorine (fc) from the total chlorine (tc) in the pool/spa water. Hach 2745050 free & total chlorine test strips. Free chlorine is also known as chlorine residual, free chlorine residual, and residual chlorine.
Combined chlorine refers to the mixture of chlorine with organic amines or ammonia.
The value of the free chlorine is always a lower than the value of the total chlorine. Free chlorine involves the amount of chlorine that’s able to sanitize contaminants, while combined chlorine refers to chlorine that has combined directly with the contaminants. This can get confusing, so we will try to keep it as simple as possible. What you can do to protect your pool.
