Chloride is a mineral needed for many bodily functions, whereas chlorine is mainly used to keep swimming pools clean. What is chloride? Chloride is one of the major minerals, which our bodies need in relatively larger amounts to keep healthy. To control quality of swimming pool water, a filtering system is usually not adequate. To control or prevent growth of organisms in swimming pool water non-professional users may treat private pools. For disinfection, appropriate balanced water chemistry is required to maintain an adequate active chlorine level. The active chlorine (free chlorine) disinfectant is used to sanitize, i.e. to kill In general, the use of chlorine neutralizers is a necessary step to maintain safety and comfort in various situations where water containing chlorine is used. Chlorine neutralizers can maximize the effectiveness of chlorine removal, reduce the danger of adverse effects, and produce a healthier and more enjoyable living and recreational The amount of chlorine used to dose water in a treatment plant is determined by the compound used. Below is a chart illustrating the different compounds of chlorine. The percent column indicates the percentage of Chlorine in the compound. For example, Chlorine Gas is pure Chlorine and yields the highest available percentage at 100%. Also, if your Free Available Chlorine level is less than 2.0 ppm, use a chlorine shock to bring the levels up and keep the pool sanitized. Start-Up and Close-Down: For winterized pools, opening the pool is the first time of the year that pool shock is used, after the water chemistry is balanced. This helps oxidize particles, kill bacteria and What is chlorine? Chlorine is a water-soluble chemical disinfectant that is commonly used for microbial disinfection because it is . effective, economical, and approved by the Environmental Protection Agency (EPA) for water treatment (EPA, 2017). Chlorine-based compounds have been used as 'primary' disinfectants for drinking water, wastewater, Chlorination. Chlorination involves adding a measured amount of chlorine to water to produce a residual sufficient to kill bacteria, viruses, and cysts. The killing effect of chlorine depends on the pH of the water, temperature, chlorine level and contact time (i.e., the time the chlorine is in the water before consumption). Soak in a light bleach solution for a few minutes; rinse well. For cut flowers. Add a few drops of bleach to the water in which you place cut flowers, and the water will stay clearer for longer. Kill weeds. Add undiluted bleach to weeds growing through cracks in your walkways. It kills them and prevents re-growth. Analysis Free chlorine may be recognized by its smell, its colour, and its characteristic reaction with mercury to produce white mercury dichloride (HgCl 2 ). Tests for chloride ions are: Chlorine is what you might describe as a Jekyll and Hyde element; it is the friend of the synthetic chemist and has found a use in a number of 'nice' applications such as the disinfecting of drinking water and keeping our swimming pools clean. CIyzs.