What’s the Difference Between Free Chlorine and Total Chlorine

Chlorine is a chemical compound used extensively in water treatment to reduce the presence of bacteria, algae, and other organic and inorganic contaminants. It has been used for this purpose for more than a century …

Chlorine is a chemical compound used extensively in water treatment to reduce the presence of bacteria, algae, and other organic and inorganic contaminants. It has been used for this purpose for more than a century and is one of the most widely used water treatments in the world. Chlorine is available in two forms: free chlorine and total chlorine. Although they are both forms of chlorine, they are not the same and serve different purposes.

Free chlorine is the form of chlorine that is actively working to disinfect the water. It is the most active type of chlorine and can be used to oxidize contaminants, such as bacteria and other organic compounds, as well as form chloramines. Free chlorine is the form of chlorine that is measured and adjusted by a water treatment plant. It is typically added to the water supply in the form of sodium hypochlorite or calcium hypochlorite.

Total chlorine is the sum of free chlorine and combined chlorine. Combined chlorine, also known as chloramines, is the form of chlorine that has already reacted with other contaminants in the water and is no longer actively disinfecting. Total chlorine includes both free chlorine and combined chlorine and is used to measure the overall chlorine concentration in the water.

The difference between free chlorine and total chlorine is important to understand in order to ensure that water is properly treated and safe to drink. Free chlorine is the form of chlorine that is actively working to disinfect the water, while total chlorine is the sum of free chlorine and combined chlorine. It is important to monitor and adjust the levels of free chlorine in order to ensure that the water is properly treated and safe to drink.

Chlorine and its Different Types

Chlorine is a chemical element found in nature and is used for a variety of purposes. In swimming pools and other water treatment facilities, chlorine is used to disinfect water and make it safe for swimming. Chlorine has two forms in water treatment: free chlorine and total chlorine. It is important to understand the difference between these two forms of chlorine in order to properly maintain your pool or spa.

Free Chlorine

Free chlorine is the form of chlorine that is readily available to sanitize water. It is measured in parts per million (ppm) and is the best way to measure the amount of chlorine in the water. Free chlorine is the best form of chlorine to kill bacteria and other contaminants. The ideal range of free chlorine in a swimming pool is between 1.0 ppm and 3.0 ppm. If the free chlorine gets too high, it can cause skin and eye irritation, so it is important to keep the levels within the specified range.

Total Chlorine

Total chlorine is a combination of both free chlorine and combined chlorine. Combined chlorine is formed when the free chlorine in the water combines with different contaminants, such as sweat, urine, and other organic matter. The combined chlorine is still effective in sanitizing the water, but it has a lower sanitizing effectiveness than free chlorine. The ideal range of total chlorine in a swimming pool is between 2.0 ppm and 4.0 ppm. If the total chlorine gets too high, it can be difficult to remove the combined chlorine, resulting in pool water that is cloudy and has an unpleasant odor.

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Conclusion

In conclusion, it is important to understand the difference between free chlorine and total chlorine in order to properly maintain a swimming pool or spa. Free chlorine is the best form of chlorine to sanitize the water, while total chlorine is a combination of both free chlorine and combined chlorine. It is important to keep both the free chlorine and total chlorine levels within the specified range in order to ensure the water is safe and clear.

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