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Can be used as a shock treatment for larger volume pools or as a chlorine sanitiser for pools and spas. A granular form of chlorine (calcium hypochlorite), the product offers 68% available chlorine content.  The granules are typically dosed manually via a dissolving tank equipped with a mixing device. ​​ A built-in scale inhibitor reduces maintenance requirements for equipment and feeding systems. Product quantity: 25kg    MPN: HTHEFGRAN25 Also available: hth Easiflo Granular Chlorine 5kg / 10kg Or why not try our own CalHypo Granules 10kg / 25kg (bulk purchase discounts available). Material Safety Data Sheet (MSDS): MHTH004.HTH GRANULES (ALL GRADES) (V4)