Disinfect your pool and hot tun easily with this Samuel Alexander Chlorine Granules 5kg. These stabilised chlorine granules help you maintain a healthy swimming environment by killing bacteria and eliminating other harmful organisms so your spa or pool water stays hygienic and healthy. These tablets are fast dissolving and get to work instantly so you don't have to wait hours to have your pool water cleaned. The tablets also have stabilised chlorine levels to help ensure your water chlorine level stays between 1-3 mg/litre (ppm) for pools and 3-5 mg/Litre (ppm) for hot tubs. Simply follow the easy instructions and select the correct amount to apply for the desired increase in chlorine levels.