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(also called TRICHLOR) A slow-dissolving, stabilized organic chlorine compound in tablet form that provides 90-percent available chlorine. Used for regular chlorination but must be dispensed using a floating feeder or an in-line feeder (chlorinator). Trichlor contains an ingredient (cyanuric acid or stabilizer) that prevents the chlorine from being destroyed by the ultraviolet (UV) rays of the sun. Trichlor has a pH of 2.8 and regular trichlor tabs should not be placed in the skimmer as the low pH will corrode the metal components in the equipment.

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