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trichloroisocyanuric acid (TCCA) is a solid chlorine containing compound

Chorine tablets may be comprised of a solid chlorine containing compound, e.g., trichloroisocyanuric acid (TCCA), pressed into a tablet. When the tablet contacts flowing water, the tablet may release free chlorine (hypochlorous acid) into the flowing water. The amount of chlorine released into the flowing water may be maintained at a relatively constant value, which may vary from 1 ppm to 10 ppm, during the tablet's effective life. A chlorine tablet comprising 30 g of chlorine may treat 3000 L of water to provide a concentration of 10 ppm chlorine, e.g.
A Trichloroisocyanuric Acid (TCCA) (roughly 46% chlorine) tablet with a mass of about 65 gram. Tablets are commercially available with masses in the range from 0.25 to 200 gram. The filter may comprise sufficient granular activated carbon to reduce the chlorine in the treated water to a level below the odor and taste thresholds while simultaneously removing tastes and odors from organic compounds in the source water and disinfection byproducts.
Female patient, 48 years old, doctor, her torso multiple white stains from around 20 years, repeatedly worn trichloroisocyanuric acid (TCCA) solution (trade name Jianzhisu) soaked in half mask from the rear section of more than 2 months leukoplakia patients .20 years ago from the right flank stains found around the spot, after the right shoulder, left shoulder and right chest multiple stains around also plays a similar spot.