What Is Free Chlorine In Your Pool. Free chlorine is simply the chlorine that is available in the water to kill bacteria, viruses and other contaminants. In other words, you can still have chlorine in your pool that has been used up and is no longer effective.
In effect, free chlorine is the amount of chlorine that is free to kill harmful microorganisms in your swimming pool’s water. Well, here’s the short explanation: There are three measurements of chlorine in pool or spa water:
The free chlorine is either added manually, by an automatic dispenser or by way of salt water chlorination.
At 5 ppm it is safe to swim in. Lastly, free chlorine (fcl) refers to the amount of chlorine in your pool, which hasn’t yet mixed into the chlorinated water to sanitize any harmful bacteria or microorganisms that can grow in a pool. Free chlorine levels should range between 1 and 3 parts per million. In effect, free chlorine is the amount of chlorine that is free to kill harmful microorganisms in your swimming pool’s water.
