In the lengthy article on public health and recreational facility creation, pool chlorine tablets can be a landmark event. Towards the end of the 19th century, when urban public swimming pools started emerging, waterborne health crises associated with water contamination were frequent. Only with the invention of chlorine-based disinfectants did water become truly safe for swimming. Today, chlorine tablets are standard equipment in more than 90% of public swimming pools throughout the globe. The scientific principle and application experience of them merit our elaborate illustration.
I. Microscopic battlefield of chlorine tablets
Trichloroisocyanuric acid (TCCA), which is the active ingredient of chlorine tablets, can readily undergo with hydrolysis reaction upon contact with pool water and releases hypochlorous acid (HClO). HCIO is a strong oxidizing molecule that can be called the “archenemy” of microorganisms. It can penetrate the bacterial cell membrane and directly inactivate the enzyme system and genetic material of the cell.
Experiential evidence shows that at normal levels, chlorine tablets kill Escherichia coli with a 99.9% rate of efficiency within 10 minutes and inactivate Legionella within 20 minutes. More impressive, however, is the fact that tablets can decompose urea into carbon dioxide and nitrogen through oxidation, thereby reducing the irritant odor of water.
II. The art of precise dosing
Pool chlorine tablets are not a once-only application. This requires elastic adjustment with factors like the quality of water and frequency of use. You’d better use 2-3 grams of tablets for every cubic meter of water for the first time. There should be an employment of a water quality tester to determine the residual chlorine level and regulate it between 0.3-1.0mg/L. For household swimming pools, people can use a floating chlorine tablet dispenser to reduce frequent operations.
Furthermore, it is necessary to monitor regularly the pH value (optimal range 7.2-7.8). Low acidity water quality will accelerate the use of chlorine. If necessary, use an acid-base regulator to synchronize treatment so that the chlorine tablets can achieve the optimum disinfection effect.

III. New challenges in the industry
With increasing environmental awareness, substitutes for chlorine tablets are under greater scrutiny. Although technologies such as ultraviolet disinfection and ozone treatment can reduce chemical residues, they also have limitations. For example, they need high initial capital and can’t keep bacteria at bay forever. Nowadays, the market tends to adopt a “chlorine + auxiliary technology” package, i.e., a package of chlorine tablets and activated carbon filter systems, which is not only able to ensure the disinfecting function but also adsorb residual chlorine byproducts.
Conclusion
From laboratory chemical formula to prudent pool management, chlorine tablets have always promoted industry growth at the expense of water quality safety. How to apply this technology in a more scientific and efficient manner will be an important issue for pool management in the future.
As an experienced chlorine tablets manufacturer and distributor, we always keep product quality strictly controlled with high requirements. All of our chlorine tablets can guarantee stable and efficient disinfection. From expert logistics and warehouses to seamless technical support, we require full-chain services. Looking forward to serving alongside you, and both to mutually guarantee the transparency and safety of every pool.”.